from The Century Dictionary.
- noun Nautical, a lug-sail contracted into a narrower compass by rolling up a portion of the canvas on its yard.
Sorry, no etymologies found.
As a sailing boat, she was well equipped with a standing-lug main and balance-lug foresail, together with two jibs.
"That is no Farlingford boat," said Sep, versed in riverside knowledge, so soon as he saw the balance-lug moving along the line of the river-wall, half a mile below the village.
"At a quarter to ten, by my watch, we pushed off, stepped mast and hoisted sail -- a small balance-lug.