Gb character /ɡ͡b/ /ɡ͡bì/ spelling unconfirmed
gb (lowercase), caps GB
Definitions
  1. The eighth letter of the Yoruba alphabet, called gbì and written in the Latin script. letteruppercase
Source: Wiktionary, where this word is spelled “Gb”. Reference: en-Gb-yo-character-rOSN0-RM