And others (2,2)
I believe the answer is:
'and others' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for et al that I've seen before include "'And others, to the old Romans (2,2)'" , "Latin notation meaning and others" , "... and other people (or things) (abbr)" , "Latin abbreviation meaning 'and others'" , "and everyone else)" .)