lugsail

[luhg-seyl; Nautical luhg-suh l] /ˈlʌgˌseɪl; Nautical ˈlʌg səl/
noun, Nautical
1.
a quadrilateral sail bent upon a yard that crosses the mast obliquely.
Also called lug.
Origin
1670-80; Middle English lugge pole (now dial.; cf. log1) + sail
Examples from the web for lugsail
  • Most carried a single, five-batten lugsail, a rig that is both efficient and easy to control.
British Dictionary definitions for lugsail

lugsail

/ˈlʌɡsəl/
noun
1.
(nautical) a four-sided sail bent and hoisted on a yard
Word Origin
C17: perhaps from Middle English (now dialect) lugge pole, or from lugge ear