(n) :
a forked bone between the neck and breast of a bird consisting chiefly of the two clavicles fused at their median or lower end. (Scientific name:
furcula); a
spar in two parts, between which a
sail is
hoisted, the wishbone extending its
clew
(adj) :
incorporating a wishbone spar in the
rig, as: "a wishbone ketch", "a wishbone schooner"