extensor hallucis brevis
noun
extensor hal·lu·cis brev·is
| \ -ˈhal-(y)ü-səs-ˈbrev-əs
, -ˈhal-ə-kəs-
\
, -ˈhal-ə-kəs-
\
Medical Definition of extensor hallucis brevis
: the part of the extensor digitorum brevis that extends the big toe