The db ligature, ȸ, is a typographic ligature of Latin d and b, and used in Africanist linguistics for the transcription of certain African languages to represent [b̪], for example in the Zulu sequence [ɱȸv]. . ȸ was added to Unicode 4.1 in 2005, as U+0238 . As of 2010, only a handful of fonts can display the character. These include Charis SIL, Code2000, Doulos SIL, Ubuntu, and DejaVu fonts.
References
Db ligature Wikipedia(Text) CC BY-SA