[1] : The Collaborative International Dictionary of English v.0.48

nip \nip\, n.
   1. a seizing or closing in upon; a pinching; as, in the
      northern seas, the nip of masses of ice.
      1913 webster

   2. a pinch with the nails or teeth.
      1913 webster

   3. a small cut, or a cutting off the end.
      1913 webster

   4. a blast; a killing of the ends of plants by frost.
      1913 webster

   5. a biting sarcasm; a taunt. --latimer.
      1913 webster

   6. naut. a short turn in a rope.
      1913 webster

   nip and tuck, a phrase signifying equality in a contest;
      as, it was nip and tuck right to the last minute of play.
      low, u.s.
      1913 webster
see also:
nip and tuck 

[2] : WordNet (r) 2.0

nip and tuck
     adj : inconclusive as to outcome; close or just even in a race or
           comparison or competition; "as they approached the
           finish line they were neck and neck"; "the election was
           a nip and tuck affair" syn: neck and neck, head-to-head
     n : plastic surgery to remove wrinkles and other signs of aging
         from your face; an incision is made near the hair line
         and skin is pulled back and excess tissue is excised;
         "some actresses have more than one face lift" syn: face
         lift, facelift, lift, face lifting, cosmetic
         surgery, rhytidectomy, rhytidoplasty
     adv : even or close in a race or competition or comparison; "the
           horses ran neck and neck"; "he won nip and tuck" syn:
           neck and neck, head-to-head
see also:
neck and neck head-to-head face lift facelift lift face lifting 
cosmetic surgery rhytidectomy rhytidoplasty 

[3] : Moby Thesaurus II by Grady Ward, 1.0

24 moby thesaurus words for "nip and tuck":
   alike, at par, au pair, commensurate, drawn, equal, equalized,
   even, even stephen, fifty-fifty, half-and-half, knotted, level,
   like, on a footing, on a level, on a par, on even ground, par,
   proportionate, quits, square, stalemated, tied

Nip >> N Words
Nip, definition of term: Nip
nip_pag1.html

Nip Off >> N Words
Nip Off, definition of term: Nip Off
nip+off_pag1.html