- To release.
- The students were let out of school early.
- To allow to operate at higher speed by adjusting controls.
- He let out the reins when they were a mile from the barn.
- The engineer let out the throttle after the train crossed the bridge.
- (of clothing) To enlarge by adjusting one or more seams.
- After the holidays he had to have his suits let out.
- (informal) Of sound, to emit.
- The dog let out a yelp.
- To disclose.
- He accidentally let out the location for the meeting.
to allow to operate at higher speed by adjusting controls
of clothing: to enlarge by adjusting one or more seams