by

قَبْل (أيّام، سَنَوات، إلخ)‏ \ back: in the past: I met her a few days back. before: earlier than: He arrived before dinner. He arrived beford me. by: before; not later than: Can you finish this by Tuesday? They ought to be here by now. fore: before. prior: (with to) before: A ticket must be obtained prior to travelling.