Source : Webster's Revised Unabridged Dictionary (1913)

Tuck \Tuck\, v. t. [imp. & p. p. {Tucked}; p. pr. & vb. n.
   {Tucking}.] [OE. tukken, LG. tukken to pull up, tuck up,
   entice; akin to OD. tocken to entice, G. zucken to draw with
   a short and quick motion, and E. tug. See {Tug}.]
   1. To draw up; to shorten; to fold under; to press into a
      narrower compass; as, to tuck the bedclothes in; to tuck
      up one's sleeves.

   2. To make a tuck or tucks in; as, to tuck a dress.

   3. To inclose; to put within; to press into a close place;
      as, to tuck a child into a bed; to tuck a book under one's
      arm, or into a pocket.

   4. [Perhaps originally, to strike, beat: cf. F. toquer to
      touch. Cf. {Tocsin}.] To full, as cloth. [Prov. Eng.]

Source : WordNet®

tucked
     adj : having tucked or being tucked; "tightly tucked blankets"; "a
           fancy tucked shirt" [ant: {untucked}]