let

1. (transitive) To allow to, not to prevent (+ infinitive, but usually without to).Examples: "After he knocked for hours, I decided to let him come in."; "Pharaoh said, I will let you go."; "If your name be Horatio, as I am let to know it is[…]"transitive

2. (transitive) To allow to be or do without interference; to not disturb or meddle with; to leave alone.Examples: "Let me be!"; "Yet neither spinnes nor cardes, ne cares nor frets, / But to her mother Nature all her care she lets."transitive

3. (transitive) To allow the release of (a fluid).Examples: "The physicians let about a pint of his blood, but to no avail."transitive

4. (transitive, chiefly British) To allow possession of (a property etc.) in exchange for rent.Examples: "I decided to let the farmhouse to a couple while I was working abroad."; "Trailers for sale or rent, rooms to let, fifty cents."Britishtransitive

5. (transitive) To give, grant, or assign, as a work, privilege, or contract; often with out.Examples: "to let the building of a bridge;  to let out the lathing and the plastering"transitive

6. (auxiliary, transitive) Used to introduce a first or third person imperative verb construction.Examples: "Let's put on a show!"; "Let us have a moment of silence."; "Let me just give you the phone number."auxiliarytransitive