Brother or sister (3)
I believe this clue is a double definition.
'brother' is the first definition.
(I know that brother can be written as sibling)
'sister' is the second definition.
(I know that sister can be written as sibling)
(Other definitions for sibling that I've seen before include "Bro, perhaps" , "Close relative" , "Bro or sis" , "One's brother or sister" , "Maybe brother" .)
I believe this is a double definition.
'brother' is the first definition.
(short for sibling)
'sister' is the second definition.
(I know that sister can be written as sib)
(Another definition for sib that I've seen is " Brother".)