present participle of knock for a loop

present participle of throw for a loop

past participle of throw for a loop

simple past tense and past participle of knock for a loop

simple past tense of throw for a loop

Third-person singular simple present indicative form of knock for a loop

A long, narrow, vertical opening, usually widening inward, cut in a medieval wall, parapet, or fortification, for use by archers.

(rail transport) A loop provided for the purpose of turning a train or tram round to face in the opposite direction. The vehicles themselves do not have to reverse.

(topology) A path whose initial point is equal to its terminal point. / (mathematics) Alternative form of closed curve / (cybernetics) A closed-loop transfer function.

Alternative form of loophole