buoy
noun/bɔɪ/
/ˈbuːi/, /bɔɪ/
- an object which floats on the sea or a river to mark the places where it is dangerous and where it is safe for boats to go see also lifebuoyTopics Transport by waterc2Word OriginMiddle English: probably from Middle Dutch boye, boeie, from a Germanic base meaning ‘signal’. The verb is from Spanish boyar ‘to float’, from boya ‘buoy’.
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buoy