to put into a small, close, or concealing place: Tuck the money into your wallet.
2.
to thrust in the loose end or edge of (a garment, covering, etc.) so as to hold closely in place (usually followed by in, up, under, etc.): Tuck in your blouse. Tuck the edge of the sheet under the mattress.
3.
to cover snugly in or as if in this manner: She tucked the children into bed.
4.
to pull up into a fold or folds; draw up into a folded arrangement (usually followed by in, up, etc.): to tuck up one's skirts; to tuck one's knees under one's chin.
Sewing. a fold, or one of a series of folds, made by doubling cloth upon itself and stitching parallel with the edge of the fold, used for decoration or for shortening or fitting a garment.
13.
Diving,Gymnastics. a body position in which the head is lowered and the thighs held against the chest with the knees bent and the arms locked around the shins. Compare layout(def. 10), pike7.
14.
Skiing. a crouch in which the ski poles are held close to the chest, extending back under the arms and parallel to the ground, as to maximize speed downhill.
15.
Informal. a plastic surgery operation: a tummy tuck.
tuck into, to eat with gusto: We tucked into a roast beef dinner.
Origin: before 900; Middle English t(o)uken to stretch (cloth), torment, Old English tūcian to torment; akin to Middle Low German tucken to tug, German zucken to jerk. See tow1
late 14c., "to pull or gather up," earlier "to pluck, stretch" (late 13c., implied in tucker), probably from M.L.G. or M.Du. tucken "pull up, draw up, tug" (cognate with O.E. tucian "mistreat, torment," and related to O.E. togian "to pull," Ger. zucken; see tow). Sense of "thrust