throughpreposition, adverbpronunciationThe word through sounds like who, because we don't say the letters -gh in this word.1from one side or end of something to the other side or end: We drove through the tunnel. What can you see through the window? She opened the gate and we walked through.2from the beginning to the end of something: We travelled through the night.3connected by telephone: Can you put me through to Jill Knight, please? I tried to phone you but I couldn't get through.4(American) (alsoinformal) thru) until, and including: We'll be in New York Tuesday through Friday.5because of somebody or something: She got the job through her father.