ulna definition by Wordo

Noun

The

bone

of

the

forearm

that

extends

from

the

elbow

to

the

wrist

on

the

side

opposite

to

the

thumb

,

corresponding

to

the

fibula

of

the

hind

limb

.

Also

,

the

corresponding

bone

in

the

forelimb

of

any

vertebrate

.