The Collaborative International Dictionary of English v.0.48:

Furcate \Fur"cate\, Furcated \Fur"ca*ted\, a. [L. furca fork.
   See Fork.]
   Forked; branching like a fork; as, furcate twigs.
   [1913 Webster]

WordNet (r) 3.0 (2006):

furcate
    v 1: divide into two or more branches so as to form a fork; "The
         road forks" [syn: branch, ramify, fork, furcate,
         separate]

Moby Thesaurus II by Grady Ward, 1.0:

59 Moby Thesaurus words for "furcate":
   V-shaped, Y-shaped, akimbo, angle, angle off, angular, arboreal,
   arborescent, arboriform, bend, bent, biforked, bifurcate,
   bifurcated, branch, branch out, branched, branching, branchlike,
   cornered, crank, crook, crooked, crotched, dendriform, dendritic,
   divaricate, elbow, fork, forked, forking, forklike, furcal,
   geniculate, geniculated, hook, hooked, jagged, knee-shaped,
   pointed, pronged, ramify, ramous, saw-toothed, sawtooth, serrate,
   sharp, sharp-cornered, stem, swerve, tree-shaped, treelike,
   tridentlike, trifurcate, trifurcated, veer, zag, zig, zigzag