ha in Wingdings is ♒︎♋︎

An exclamation denoting surprise, joy, or grief. Both asuttered and as written, it expresses a great variety of emotions,determined by the tone or the context. When repeated, ha, ha, it isan expression of laughter, satisfaction, or triumph, sometimes ofderisive laughter; or sometimes it is equivalent to "Well, it is so."Ha-has, and inarticulate hootings of satirical rebuke. Carlyle.