Definitions of let:

• noun:   a serve that strikes the net before falling into the receiver's court; the ball must be served again
• noun:   the most brutal terrorist group active in Kashmir; fights against India with the goal of restoring Islamic rule of India
• verb:   make it possible through a specific action or lack of action for something to happen
• verb:   leave unchanged

  Example: "Let it be"

• verb:   actively cause something to happen

  Example: "I let it be known that I was not interested"

• verb:   grant use or occupation of under a term of contract
• verb:   cause to move; cause to be in a certain position or condition

  Example: "This let me in for a big surprise"

• verb:   consent to, give permission

  Example: "I won't let the police search her basement"