Old English beacen "sign, portent, lighthouse," from West Germanic *baukna "beacon, signal" (source also of Old Frisian baken, Old Saxon bokan, Old High German bouhhan); probably from Proto-Germanic *baukna- "beacon, signal," from suffixed form of PIE root *bha- (1) "to shine." Figurative use from c. 1600.
be-
beach
beach-comber
beachfront
beach-head
beacon
bead
beadle
beadsman
beadwork
beady