a punishment in which a student must stay at school after others have gone home; "the detention of tardy pupils"
a state of being confined (usually for a short time); "his detention was politically motivated"; "the prisoner is on hold"; "he is in the custody of police"
serve as a teacher or trusted counselor; "The famous professor mentored him during his years in graduate school"; "She is a fine lecturer but she doesn't like mentoring"
tending to or capable of propelling; "propellant fuel for submarines"; "the faster a jet plane goes the greater its propulsive efficiency"; "universities...the seats of propulsive thought"
a serve that strikes the net before falling into the receiver's court; the ball must be served again
leave unchanged; "let it be"
actively cause something to happen; "I let it be known that I was not interested"
make it possible through a specific action or lack of action for something to happen; "This permits the water to rush in"; "This sealed door won't allow the water come into the basement"; "This will permit the rain to run off"