n.
Pronunciation: ' bü- ē , ' bo ̇ i
Function: noun
Etymology: Middle English boye, probably from Middle Dutch boeye; akin to Old High German bouhhan sign ― more at BEACON
Date: 13th century
1 : FLOAT 2 especially : a floating object moored to the bottom to mark a channel or something (as a shoal) lying under the water
2 : LIFE BUOY
buoy 1