The Collaborative International Dictionary of English v.0.48:

Gybe \Gybe\, v. t. & i. [imp. & p. p. Gybed (j[imac]bd); p.
   pr. & vb. n. Gybing.] [See Jibe.] (Naut.)
   To shift from one side of a vessel to the other; -- said of
   the boom of a fore-and-aft sail when the vessel is steered
   off the wind until the sail fills on the opposite side. [Also
   jibe.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Jibe \Jibe\ (j[imac]b), v. t. [imp. & p. p. Jibed (j[imac]bd);
   p. pr. & vb. n. Jibing (j[imac]b"[i^]ng).] [Cf. Dan. gibbe,
   D. gijpen, v. i., and dial. Sw. gippa to jerk. Cf. Jib, n.
   & v. i.] (Naut.)
   To shift, as the boom of a fore-and-aft sail, from one side
   of a vessel to the other when the wind is aft or on the
   quarter. See Gybe.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Jibe \Jibe\, v. i.
   1. (Naut.) To change a ship's course so as to cause a
      shifting of the boom. See Jibe, v. t., and Gybe.
      [1913 Webster]

   2. To agree; to harmonize. [Colloq.] --Bartlett.
      [1913 Webster]

WordNet (r) 3.0 (2006):

jibe
    n 1: an aggressive remark directed at a person like a missile
         and intended to have a telling effect; "his parting shot
         was `drop dead'"; "she threw shafts of sarcasm"; "she takes
         a dig at me every chance she gets" [syn: shot, shaft,
         slam, dig, barb, jibe, gibe]
    v 1: be compatible, similar or consistent; coincide in their
         characteristics; "The two stories don't agree in many
         details"; "The handwriting checks with the signature on the
         check"; "The suspect's fingerprints don't match those on
         the gun" [syn: match, fit, correspond, check,
         jibe, gibe, tally, agree] [ant: disaccord,
         disagree, discord]
    2: shift from one side of the ship to the other; "The sail
       jibbed wildly" [syn: jibe, gybe, jib, change course]

Moby Thesaurus II by Grady Ward, 1.0:

121 Moby Thesaurus words for "jibe":
   about ship, accord, agree, alter, ameliorate, answer to, assent,
   assort with, back and fill, be changed, be consistent,
   be converted into, be of one, be renewed, be uniform with,
   bear away, bear off, bear to starboard, beat, beat about,
   bottom out, box off, break, bring about, bring round, cant,
   cant round, cast, cast about, change, change course,
   change the heading, check, checker, chime, chop, chop and change,
   cohere, coincide, come about, come around, come round, concur,
   conform, conform with, consist with, cooperate, correspond,
   degenerate, deteriorate, deviate, diverge, diversify,
   double a point, dovetail, fall in together, fetch about, fit in,
   fit together, flop, go, go about, go together, go with, gybe,
   hang together, harmonize, haul around, heave round, hit,
   hold together, improve, interlock, intersect, jibe all standing,
   lock, match, meliorate, miss stays, mitigate, modulate, mutate,
   overlap, parallel, ply, put about, put back, register,
   register with, respond to, revive, round a point, sheer, shift,
   sing in chorus, slew, sort with, square, square with,
   stand together, swerve, swing round, swing the stern, tack,
   take a turn, tally, throw about, turn, turn aside, turn back,
   turn into, turn the corner, undergo a change, vary, veer, warp,
   wear, wear ship, wind, worsen, yaw