a device impressed on a piece of wax, moist clay, etc, fixed to a letter, document, etc, as a mark of authentication

a stamp, ring, etc, engraved with a device to form such an impression

a substance, esp wax, so placed over an envelope, document, etc, that it must be broken before the object can be opened or used

any substance or device used to close or fasten tightly

a material, such as putty or cement, that is used to close an opening to prevent the passage of air, water, etc

a small amount of water contained in the trap of a drain to prevent the passage of foul smells

an agent or device for keeping something hidden or secret

anything that gives a pledge or confirmation

a decorative stamp often sold in aid of charity

the obligation never to reveal anything said by a penitent in confession

to affix a seal to, as proof of authenticity

to stamp with or as if with a seal

to approve or authorize

to close or secure with or as if with a seal

to enclose (a place) with a fence, wall, etc

to decide irrevocably

to make (a marriage or adoption) perpetually binding

to subject (the outside of meat, etc) to fierce heat so as to retain the juices during cooking

to close tightly so as to render airtight or watertight

to paint (a porous material) with a nonporous coating

to consolidate (a road surface) with bitumen, tar, etc