The Collaborative International Dictionary
Polacca \Po*lac"ca\, n. [It. polacca, polaccra, polacra; cf. F. polaque, polacre, Sp. polacre,] [Written also polacre.]
(Naut.) A vessel with two or three masts, used in the Mediterranean. The masts are usually of one piece, and without tops, caps, or crosstrees.
(Mus.) See Polonaise.
Wiktionary
n. (context nautical obsolete English) A three-masted merchant ship.
Usage examples of "polacre".
Let them but point a finger at us, and we will tow their Austrian polacre out into the bay, and burn her before their eyes.
The polacre had either altered its course or would do so presently: the question was, where would this new course bring it to by dawn?
Louise, French polacre laden with corn and general merchandise for Cette, of about 200 tons, 6 guns and 19 men.
She has been very short of stores and cordage, but now it seems probable that she has been supplied with them by her Algerian friends: there are two of them with her at present, a polacre and a polacre-settee, both armed and mounting perhaps a score of guns between them, nine- or at the most twelve-pounders.
The polacre had already won her single anchor and her companion was slipping her cable.
But this polacre, damaged, would not sail with Bartholomew, reducing the odds by twenty per cent.
To his left lay the merchantmen: scores and, indeed, hundreds of feluccas, tartans, xebecs, pinks, polacres, polacre-settees, houarios and barca-longas - all the Mediterranean rigs and plenty from the northern seas as well - bean-cods, cats, herring-busses.
The sun set over the starboard bow, the wind began to back into the north, blowing in gusts, and darkness swept up the sky from behind them: the polacre was still three-quarters of a mile ahead, holding on to her westward course.