Main Entry: cir·rus

Pronunciation: \ˈsir-əs\

Function: noun

Inflected Form(s): plural cir·ri \ˈsi(ə)r-ˌī\

: a slender usually flexible animal appendage: as a : a fused group of cilia functioning like a limb on some protozoans b : the male copulatory organ of some worms

[cirrus illustration]