Pronunciation: (u-lou'),[key] —v.t. 1. to give permission to or for; permit: to allow a student to be absent; No swimming allowed. 2. to let have; give as one's share; grant as one's right: to allow a person $100 for expenses. 3. to permit by neglect, oversight, or the like: to allow a door to remain open. 4. to admit; acknowledge; concede: to allow a claim. 5. to take into consideration, as by adding or subtracting; set apart: to allow an hour for changing trains. 6. Older Use.to say; think.
7. Archaic.to approve; sanction.
—v.i. 1. to permit something to happen or to exist; admit (often fol. by of): to spend more than one's budget allows; a premise that allows of only one conclusion. 2. allow for, to make concession or provision for: to allow for breakage.