bas·i·net also bas·ci·net 
(băs′ə-nĕt, băsə-nĭt)
(băs′ə-nĕt, băsə-nĭt)n.
A small, light, rounded steel helmet from the Middle Ages, terminating in a point at the top and often having a projecting visor.
[Middle English, from Old French bacinet, diminutive of bacin, basin; see BASIN.]