fall out

Short definition from Wiktionary

Noun

1. 1
   Synonym of falling out (“rift following a disagreement or quarrel”).
2. 2
   Alternative spelling of fallout.

Verb

1. 1
   To come out of something by falling.
2. 2
   To cease to be on friendly terms.
3. 3
   To leave one's place in the current formation of ranks in order to take one's place in a new formation.
4. 4
   To leave one's current location to report for duty at a new location.
5. 5
   To pass out.
6. 6
   To turn out, happen.
7. 7
   To fall off due to the quoins holding it in place having become wet and therefore loose.
8. 8
   To give way under someone.
9. 9
   To cause someone to slip and/or fall down.
10. 10
    To be enthusiastic about something; to laugh very hard.
11. 11
    To depart.
12. 12
    To collapse; to pass out from intoxication.
13. 13
    To be shocked by something.