(transitive) To cause to explode or come out; to release. / (transitive, idiomatic) To forgive and not punish.

An escape from punishment. / (engineering) A device for letting off, releasing, or giving forth, as the warp from the cylinder of a loom.

present participle of let off

Third-person singular simple present indicative form of let off

plural of let-off

Alternative form of blow off steam