Ɓ

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Ɓ (uppercase) and ɓ (lowercase), called B-hook or B with hook, are letters of the Latin alphabet used in the International African Alphabet. The ɓ represents a voiced bilabial implosive sound in the International Phonetic Alphabet (IPA). This sound appears in languages such as Fula, Hausa, and Giziga. The letter was also used or proposed for Xhosa and Zulu in the past. In Unicode, uppercase Ɓ is U+0181 and lowercase ɓ is U+0253. In Shona, the uppercase is just a larger form of the lowercase. A 1930 orthography used a different capital form similar to the Cyrillic letter Б, and a 1971 Loma New Testament used that form.