I. ˈsəb noun
Date: 1830
: substitute
II. verb
( subbed ; sub·bing )
Date: 1853
intransitive verb
: to act as a substitute
transitive verb
1. British : to read and edit as a copy editor : subedit
2. : subcontract 1
III. noun
Date: 1916
: submarine
IV. abbreviation
1. subaltern
2. subscription
3. subsidiary
4. suburb