Counter brace

Coun´ter brace`

1.(Naut.) The brace of the fore-topsail on the leeward side of a vessel.
2.(Engin.) A brace, in a framed structure, which resists a strain of a character opposite to that which a main brace is designed to receive.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.