WordNet
gaff topsail
n. a triangular fore-and-aft sail with its foot along the gaff and its luff on the topmast [syn: fore-and-aft topsail]
Usage examples of "gaff topsail".
No, nor the gaff topsail: the cutter was already making a good eight knots and clapping on more sail would only make her heel more without adding to her speed.