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1.
Latin for "and others".
As far dictionary sites go, I think urbandictionary.com, et al, would highly appreciate some form of gratuity.
by gdog September 17, 2004
 
2.
"everything else" or "other related items". It's not too far from its true Latin meaning, just a little more urbanized.
"You bring the rum et al." Instead of "You bring the rum, ice, coke, glasses."
by Azion October 21, 2014