Pronunciation: (bas'u-nit, -net", bas"u-net'), [key]
1. a globular or pointed helmet of the 14th century, often provided with a visor or aventail: evolved from the cervellière. Cf. great basinet.
2. a supplementary cap that is worn underneath a helm, as an arming cap. Also,basnet,bassinet.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.