Casual comment (5)
(Other definitions for aside that I've seen before include "Actor's remark for the audience alone" , "Separately" , "Where one's taken for intimacy" , "I.e. sad (anag.)" , "Remark by an actor, directly to audience say" .)
(Other definitions for remark that I've seen before include "Comment or mention" , "(E.g. Virgil's) pastoral poems" , "Observation - notice" , "Notice or comment on" , "Say as a comment" .)