Definition from Wiktionary, the free dictionary
backweight (plural backweights)
- (golf) A weight attached to the back of a golf club to give it a lower centre of gravity.
2007 September 7, Wendy Moonan, “Olde Cleeks, Spoons and Brassies (for Birdies and Bogeys)”, in New York Times:
- Fashioned with shafts of aged hickory, ash or lemonwood, these early clubs have heads with an insert of ram’s horn or a lead backweight.