Short for LUG-SAIL. Also Comb., as lug-rigged adj.; lug-boat (see quot. 1867).
1830. Marryat, Kings Own, xiii. Up with the lugs.
1859. All Year Round, No. 33. 148. My eye lights on certain lug-rigged boats bobbing along the waves. These are fishing-boats.
1860. Nares, Seamanship, 100. Sling a dipping lug 1/3 from the foremost yard arm; standing lug 1/4.
1867. Smyth, Sailors Word-bk., Lug-boat, the fine Deal boats which brave the severest weather; they are rigged as luggers, and dip the yards in tacking.
1884. H. Collingwood, Under Meteor Flag, 9. She was jogging easily along under her fore and mizzen lugs and a small jib.