cuneiform bone

noun

1

: any of three small bones of the tarsus situated between the navicular and the first three metatarsals:

a

: one on the medial side of the foot that is just proximal to the first metatarsal bone and is the largest of the three bones

called also medial cuneiform, medial cuneiform bone

b

: one that is situated between the other two bones proximal to the second metatarsal bone and is the smallest of the three bones

called also intermediate cuneiform, intermediate cuneiform bone

c

: one that is situated proximal to the third metatarsal bone and that lies between the intermediate cuneiform bone and the cuboid

called also lateral cuneiform, lateral cuneiform bone

2

: triquetral bone