Coat link

a pair of buttons or studs joined by a link, to hold together the lappels of a double-breasted coat; or a button with a loop for a single-breasted coat.
- Rowley.

See also: Coat

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
SOME gun discharge residue on a coat linked to one of two men jailed for murdering Stephen Carroll could have come from a different firing incident, a court heard yesterday.