noun
plural subs
[count] informal
someone who does the job of another person when that person is not able to do it :substitute
Brit :subeditor - compare 3sub
verb
subs; subbed; subbing
to take the place of another person :to act as a substitute [no obj]
usually used as (be/get) subbed
[+ obj] :subcontract
noun
plural subs
[count] informal
submarine
US :submarine sandwich