Pisiform

[paisifɒ:m]

(noun.) a small wrist bone that articulates only with the triquetral.

Checked by Hugo--From WordNet

(a.) Resembling a pea or peas in size and shape; as, a pisiform iron ore.

(n.) A small bone on the ulnar side of the carpus in man and many mammals. See Illust. of Artiodactyla.

Checker: Thelma

adj. pea-shaped.

Typist: Weldon