The Collaborative International Dictionary of English v.0.48:
Metatarsal \Met`a*tar"sal\, a. (Anat.) Of or pertaining to the metatarsus. -- n. A metatarsal bone. [1913 Webster]WordNet (r) 3.0 (2006):
metatarsal adj 1: of or relating to the metatarsus; "metatarsal bones" n 1: any bone of the foot between the ankle and the toes