Longman Dictionary of Contemporary English - permission

~ n an act of officially allowing someone to do something  (permission to do sth)  (I applied to the authorities for permission to cross the frontier. | give sb permission (to do sth))  (Who gave you permission to leave class early? | ask permission (from sb))  (If you want to take photographs, you must ask permission from the warden. | with your permission spoken (=used to politely ask someone for permission to do something))  (With your permission, I'll send a copy of this letter to the doctor.)  (- see also planning permission)