Main Entry: tri·um·vir

Pronunciation: \trī-ˈəm-vər\

Function: noun

Inflected Form(s): plural tri·um·virs also tri·um·vi·ri \-və-ˌrī, -ˌrē\

Etymology: Middle English, from Latin, back-formation from triumviri, plural, commission of three men, from trium virum of three men

Date: 15th century

: one of a commission or ruling body of three