Did you know that 'groyne' is actually French?

'Groyne' is a word borrowed from French 'groign'. The word entered the English language some time around 1582.

groyne [noun] [1582]

Groin

See 'groyne' on the Loan Words Map

See more loan words from French.

note: A low wall or sturdy barrier built out into the sea from a beach to check erosion and drifting. Late 16th century from dialect groin ‘snout’ from Old French groign.
Etymology: by alteration

See more loan words from 1500s.