Crossjack

The lowermost square sail on a mizen-mast. See Plates 75.24, 76.49 & 78.3s.. Jigger. Is the term given to a..Course”, the head of which is stretched along and fastened to the jigger-yard of a four-masted ship. See Plate 76. so.; Also to the gaff-sail set abaft, and in connection with the jigger-mast, of a four-masted barque. See Plate 78. 56.