long time

Short definition from Wiktionary

Interjection

1. 1
   Used as part of greeting of two people who have not been in contact for a long time.
2. 2
   Used other than figuratively or idiomatically: see long, time.

Noun

1. 1
   A meeting with a sex worker that usually lasts the entire night.

Adjective

1. 1
   Alternative spelling of longtime.