1762. Falconer, Shipwr., I. 198. Uplong the slippry Masts the Yards ascend.
B. sb. A strengthening bar extending along the sail of a windmill.
1819. Rees, Cycl., s.v. Windmill, There ought to be three uplongs to the driving, and two to the leading side, to strengthen the lattice.
1892. P. H. Emerson, Son of Fens, xxxii. 356. That uplong have got loose.
C. adj. Extending upwards.
1875. Morris, Æneid, IX. 244. In daily hunt, whereby we learned the rivers uplong brim.