n.1.(Naut.) A rope applied to the fore yardarm, to change the position of the foresail.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in classic literature ?
On the over- shadowed deck all hands stood by the forebraces wait- ing for my order.
(5) A derivation from ON stoe[??]ingr with a basic meaning of 'support' would point to braces, and I suggest that here forebraces, running to the stem of the ship, may be meant, perhaps as an extra precaution in the rough seas of the Channel.