From Wiktionary, the free dictionary
From in- + stop.
instop (third-person singular simple present instops, present participle instopping, simple past and past participle instopped)
- (transitive) To stop; close; shut; make fast.
- Pintos, Piston, Points, Tipson, opts in, pinots, pintos, piston, pitons, points, posnit, postin
