jib boom

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A spar forming a continuation of the bowsprit.

from The Century Dictionary.

• noun Nautical, a spar run out from the extremity of the bowsprit and serving as a continuation of it. Beyond this is sometimes extended the flying-jib boom.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun nautical A spar attached to the outboard end of a bowsprit or flying jib boom with an additional stay to increase sail area.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a spar that extends the bowsprit