And others, for short (2,2)
'and others for short' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for et al that I've seen before include "Latin notation meaning and others" , "Latin abbreviation meaning 'and others'" , "and everyone else)" , "And the rest, to the old Romans" , "'And others, to the old Romans (2,2)'" .)
(Other definitions for etal that I've seen before include "and others . . ." , "the rest" , "elsewhere" .)