defenseman

[ dih-fens-muh n, -man ]
/ dɪˈfɛns mən, -ˌmæn /

noun, plural de·fense·men [dih-fens-muh n, -men] /dɪˈfɛns mən, -ˌmɛn/. Sports.

a player in certain games, as ice hockey or lacrosse, who lines up in a defensive zone or position.

Origin of defenseman

First recorded in 1890–95; defense + man1