There is a small lighthouse in Plymouth,MA, harbor called
the Gurnet. Now I think I know where the name came from:
"From Made In America by Bill Bryson (Black Swan books, 1994):

[The first colonists] brought many words with them that have not survived in either America or Britain, to the lexical impoverishment of both: flight for a dusting of snow, fribble for a frivolous person, bossloper for a hermit, spong for a parcel of land, bantling for an infant, sooterkin for a sweetheart, gurnet for a protective sandbar, and the much-missed slobberchops for a messy eater.