yardarm

• POS: Noun
• HYPHEN: yard=arm

CIDE DICTIONARY

yardarm, n. 

•  Either half of a square-rigged vessel's yard{6}, from the center or mast to the end.  [1913 Webster]

  " Ships are said to be yardarm and yardarm when so near as to touch, or interlock yards."  [1913 Webster]
•  The portion of a yard{6} outboard of the slings, often called the outer quarter.  [RH]

  " A yard{6} is considered to have four unequal quarters, two quarters extending from the mast to the slings on each side, and two smaller outer quarters outboard of the slings."  [RH]