单词	pin
释义	noun | verb pinpin1 /pɪn/ ●●● S2 noun [countable] Etymology ETYMOLOGYpin1 Origin: Old English pinn 1FOR FASTENING CLOTH a short thin piece of metal with a sharp point at one end, used especially for fastening together pieces of cloth while making clothes2WORN ON CLOTHING a)an attractively shaped piece of metal jewelry, sometimes containing jewels, that you fasten to your clothes → brooch b)a round piece of metal that you attach to your clothes that shows that you belong to a particular group or believe in a particular idea:  Her pin said “Peace.”3FOR SUPPORT a thin piece of metal or wood used as a support for something, or to fasten things together:  Metal pins held the bone together.4you could hear a pin drop spoken used to say that it is very quiet and no one is speaking5FOR HAIR a pin made of wire bent into a U-shape to hold long hair in position6FOR MARKING POSITION a small thin piece of metal with a sharp point, and a colored top, used for marking the position of someone or something on a map7GAMES a)one of the bottle-shaped objects that you try to knock down in a game of bowling b)an action in the sport of wrestling in which you keep your opponent down on their back with both shoulders touching the ground in order to win8IN WEAPON a short piece of metal which you pull out of a grenade to make it explode a short time later → see also pins and needles, rolling pin, safety pin noun | verb pinpin2 ●●○ verb (pinned, pinning) Verb Table VERB TABLE pin Simple Form Present I, you, we, they pin he, she, it pins Past I, you, he, she, it, we, they pinned Present perfect I, you, we, they have pinned he, she, it has pinned Past perfect I, you, he, she, it, we, they had pinned Future I, you, he, she, it, we, they will pin Future perfect I, you, he, she, it, we, they will have pinned Continuous Form Present I am pinning he, she, it is pinning you, we, they are pinning Past I, he, she, it was pinning you, we, they were pinning Present perfect I, you, we, they have been pinning he, she, it has been pinning Past perfect I, you, he, she, it, we, they had been pinning Future I, you, he, she, it, we, they will be pinning Future perfect I, you, he, she, it, we, they will have been pinning 1[transitive always + adv./prep.] to fasten something somewhere, or to join two things together, using a pin: pin something to/on/onto Some people wore small yellow ribbons pinned to their jackets. She pinned her kids’ pictures up on the wall.2[transitive always + adv./prep.] to make someone unable to move by putting a lot of pressure or weight on him or her: pin somebody to/under/between etc. something The fourth victim was pinned beneath the car.3[transitive] computers to make an entry on a social networking website stay in the same position, or to make a picture from a website appear on another website that is used for your collection of pictures4[transitive] to hold someone down on his or her back on the ground in wrestling in order to winpin somebody/something ↔ down phrasal verb1to make someone give clear details or make a definite decision about something:  She refused to be pinned down on details of the investigation.2to understand something clearly or be able to describe it exactly:  It was difficult to pin down exactly what happened that night.3to hold someone firmly on the ground so that he or she cannot move:  We managed to pin him down until the police came.4to not allow someone to move from a particular place by shooting at him or her:  Jets were used to pin down rebel units.pin something on somebody phrasal verb1to blame someone for something, often unfairly:  Don’t try to pin the blame on me!2pin your hopes on somebody/something to hope that something will happen or someone will do something, because all your plans depend on it:  Chris is pinning his hopes on getting into Yale.
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