Wiktionary
vb. (context transitive informal English) To construct in a shoddy, makeshift manner.
Usage examples of "lash up".
Fifteen minutes later, Monk escorted the exquisite Toni Lash up to Ham.
The terrible force of the blow threw her against the stone pillar and as Valdur ripped the lash up for a second strike, blood welled in long streaks across her golden skin.
Occasionally a thin red beam of light would lash up from the golden surface, and anything it touched instantly exploded with terrible effect.
Isazi chuckled at last, and put the long lash up into the air with a report like a shot of cannon, and called to his oxen.
It was still only half past six and on a normal morning the ship's company would by now have washed the decks, polished the brightwork, spread the awnings, and be waiting for the order to lash up and stow hammocks.
He heard the bos'n's mates piping through the ship, following the shrill notes with dire threats to anyone who did not hurry to lash up his hammock.
He brought the lash up over his head with the full power of his sinewy arm, but the lash stopped at Chiun, and then the red-haired man felt himself being pulled across the floor toward the small Oriental.
At such rare times, his tail would lash up, inflicting a serious and painful wound.