"small, light, rounded steel headpiece," c. 1300, from Old French bacinet, bassinet, diminutive of bacin (see basin).
Entries linking to basinet
basin n.
"large shallow vessel or dish used chiefly to hold water or other liquid," c. 1200, from Old French bacin (11c., Modern French bassin), from Vulgar Latin *baccinum (source also of Spanish bacin, Italian bacino), from *bacca "water vessel," perhaps originally Gaulish (but OED dismisses the proposed Celtic cognates on sense grounds). The meaning "large-scale artificial water-holding landscape feature" is from 1712. The geological sense of "tract of country drained by one river or draining into one sea" is from 1830.