cilium
cil.i.um \'sil-e--*m\ \-e--*\ n or cil.ia [NL, fr. L, eyelid] pl 1: EYELASH 2: a minute hairlike process often forming a fringe; esp : a hairli ke process of many cells that is capable of lashing movement and serves esp. in free unicellular organisms to produce locomotion or in higher forms a current of fluid