subs. phr. (old).1. A sailor; and (2) a hornpipe.
1781. G. PARKER, A View of Society, i. 53. Our house in this place was chiefly supported by JACK TARS.
1785. GROSE, A Classical Dictionary of the Vulgar Tongue, s.v.
1811. GROSE and CLARKE, Lexicon Balatronicum, s.v.
1820. LAMB, The Essays of Elia, On Some of the Old Actors. Displays before our eyes a downright concretion of a Wapping sailora jolly warm-hearted JACK TAR.