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Collins Concise English Dictionary © HarperCollins Publishers:: pin down vb (tr, adverb)- to force (someone) to make a decision or carry out a promise
- to define clearly: he had a vague suspicion that he couldn't quite pin down
- to confine to a place: the fallen tree pinned him down
pin /pɪn/USA pronunciation n., v., pinned, pin•ning. n. [countable] - a small, slender, pointed piece of metal, etc., used as a fastener or support.
- any of many different forms of fasteners, badges, or ornaments made up in part of a penetrating piece, wire, or shaft:a fraternity pin;a tiepin;a diamond pin on her dress.
- Mechanical Engineeringa short metal rod, as a linchpin, driven through holes in adjacent parts, as a hub and an axle, in order to keep the parts together.
- clothespin.
- hairpin.
- Sportany of the rounded wooden clubs set up as the target in bowling, tenpins, etc.
- Informal Termsa human leg:still a little weak on my pins.
- Electronics, Electricitya pin-shaped connection, as the terminals on the base of a plug, etc.:That plug has nine pins.
v. [~ + object] - to fasten or attach with or as if with a pin or pins:I pinned the pages together.
- to hold (something) still in a spot or position:He was pinned under the wreckage during the earthquake.
- pin down:
- to force (someone) to deal with a situation, answer a question directly, or come to a decision: [~ + object + down]The reporters tried to pin the president down on his new tax proposals.[~ + down + object]Can you pin down the chief on a date for negotiations?
Idioms- Idioms pin something on someone, [Informal.]to assign the blame or guilt for something to a person:tried to pin the murder on his cousin.
PIN /pɪn/USA pronunciation n. [countable]- Computingan identification number chosen by or assigned to an individual to enable access to an automatic teller machine or other device.
WordReference Random House Unabridged Dictionary of American English © 2024pin (pin),USA pronunciation n., v., pinned, pin•ning. n. - a small, slender, often pointed piece of wood, metal, etc., used to fasten, support, or attach things.
- a short, slender piece of wire with a point at one end and a head at the other, for fastening things together.
- any of various forms of fasteners or ornaments consisting essentially or partly of a pointed or penetrating wire or shaft (often used in combination):a jeweled pin.
- a badge having a pointed bar or pin attached, by which it is fastened to the clothing:a fraternity pin.
- [Mach.]
- Mechanical Engineeringa short metal rod, as a linchpin, driven through holes in adjacent parts, as a hub and an axle, to keep the parts together.
- Mechanical Engineeringa short cylindrical rod or tube, as a wrist pin or crankpin, joining two parts so as to permit them to move in one plane relative to each other.
- Mechanical Engineeringa short axle, as one on which a pulley rotates in a block.
- the part of a cylindrical key stem entering a lock.
- a clothespin.
- a hairpin.
- FoodSee rolling pin.
- a peg, nail, or stud marking the center of a target.
- Sport[Bowling.]any one of the rounded wooden clubs set up as the target in tenpins, ninepins, duckpins, etc.
- Sport[Golf.]the flag staff which identifies a hole.
- any of the projecting knobs or rails on a pinball machine that serve as targets for the ball.
- Informal Termsa human leg.
- Music and Dancepeg (def. 5).
- Sport[Wrestling.]a fall.
- [Naut.]
- Naval Termsan axle for a sheave of a block.
- Naval TermsSee belaying pin.
- Building[Carpentry.]a tenon in a dovetail joint;
dovetail. - a very small amount;
a trifle:Such insincere advice isn't worth a pin. - Chess, Gamesthe immobilization of an enemy piece by attacking with one's queen, rook, or bishop.
- Electronics, Electricitya pin-shaped connection, as the terminals on the base of an electron tube or the connections on an integrated circuit.
- Idioms pull the pin, [Informal.]to end a relationship, project, program, or the like, because of lack of continuing interest, success, funds, etc.
v.t. - to fasten or attach with or as with a pin or pins:to pin two pieces of cloth together.
- to hold fast in a spot or position (sometimes fol. by down):The debris pinned him down.
- to transfix or mount with a pin or the like:to pin a flower as a botanical specimen.
- Chess, Gamesto immobilize (an enemy piece) by placing one's queen, rook, or bishop in a position to check the exposed king or capture a valuable piece if the pinned piece were moved.
- Sport[Wrestling.]to secure a fall over one's opponent.
- Idioms get pinned:
- (of a young woman) to receive a male student's fraternity pin as a symbol of his affection and fidelity, usually symbolizing that the couple is going steady or plans to become engaged.
- (of a young couple) to become formally pledged to one another, though not yet engaged, by the bestowing of such a pin or the exchange of pins.
- pin down:
- to bind or hold to a course of action, a promise, etc.
- Idiomsto force (someone) to deal with a situation or to come to a decision:We tried to pin him down for a definite answer, but he was too evasive for us.
- Building pin in, to fill (gaps in a rubble wall, etc.) with spalls.
- pin something on someone, [Informal.]to ascribe the blame or guilt for something to a person;
show someone to be culpable:They pinned the crime on him. - Building pin up, to make (a piece of masonry) level or plumb with wedges.
- Latin pinna feather, quill (see pinna); (verb, verbal) Middle English pinnen, derivative of the noun, nominal
- bef. 1100; (noun, nominal) Middle English pinne, Old English pinn peg; cognate with Dutch pin, German Pinne, Old Norse pinni; perh.
- 1.See corresponding entry in Unabridged bolt, peg.
- 3.See corresponding entry in Unabridged brooch.
PIN (pin),USA pronunciation n. [Computers.]- Computinga number assigned to an individual, used to establish identity in order to gain access to a computer system via an automatic teller machine, a point-of-sale terminal, or other device.
- p(ersonal) i(dentification) n(umber)
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