Wiktionary
n. A stall of an aircraft in near-vertical climb, followed by slip-back, before the nose turns toward the ground, sometimes an intentional stunt. vb. To stall in this fashion.
Usage examples of "whipstall".
Hal put the whipstall hard alee, but as she struggled wildly to feel the wind come across her stern, and threatened to gybe with all standing, Daniel paid off the yard braces to take the strain.
Ned Tyler growled, but shook his head fondly as he leaned against the whipstall and stared up.
Hal took only a moment to lash the whipstall hard over, then raced across the deck and seized one of the straining lines.
Two helmsmen, lashed to the whipstall, battled to keep her pointing with the gale, but each wave that came aboard burst over their heads.
Hal felt so saddened that he did not realize that the longboat had returned until, with a start, he saw that it had already been hoisted aboard and that Ned Tyler waited by the whipstall for his orders.
Have four spare helmsmen standing by to take the whipstall when the others are killed.