Meaning

• To release.

  "If you go into the aviary, don't let out any of the birds!"

• Of a school: to finish for the day or term, allowing the pupils to go home.

• To allow to operate at higher speed by adjusting controls.

  "He let out the reins when they were a mile from the barn."

• (of clothing) To enlarge by adjusting one or more seams.

  "After the holidays he had to have his suits let out."

• Of sound, to emit.

  "The dog let out a yelp."

• To disclose.

  "He accidentally let out the location for the meeting."