by in Wingdings is ♌︎⍓︎

Out of the common path; aside; -- used in composition, givingthe meaning of something aside, secondary, or incidental, orcollateral matter, a thing private or avoiding notice; as, by-line,by-place, by-play, by-street. It was formerly more freely used incomposition than it is now; as, by-business, by-concernment, by-design, by-interest, etc.