Areal reconstruction

*bāb- - door, gate (EDA I 58)

Borrowed from Akkadian (often via Aramaic and Arabic) into a wide range of Semitic languages. The origin of the Akkadian lexeme is uncertain. 

Akkadian
bābu - gate, door (CAD B 14, AHw 95)

The origin of the lexeme is uncertain.

Official Aramaic
bb - door (DNWSI 142)

Borrowed from Akkadian bābu ‘gate, door’.

Palmyrean
bb - door (DNWSI 142)

Borrowed from Akkadian bābu ‘gate, door’.

Jewish Babylonian Aramaic
bābā - door (DJBA 183)

Borrowed from Akkadian bābu ‘gate, door’.

Arabic
bāb- - door (Lane 272)

Borrowed from Aramaic and, ultimately, from Akkadian bābu ‘gate, door’.

Geez
bāb - door (CDG 85)

Borrowed from Arabic. The word is of Akkadian origin: bābu ‘gate, door’.

Tigre
bab - door (WTS 286)

Borrowed from Arabic. The word is of Akkadian origin: bābu ‘gate, door’.

Tigrinya
bab - door (TED 1151)

Borrowed from Arabic. The word is of Akkadian origin: bābu ‘gate, door’.

Muher
bōb - door (ML 59)

Borrowed from Arabic. The word is of Akkadian origin: bābu ‘gate, door’.

Mehri
bōb - door (ML 59)

Borrowed from Arabic. The word is of Akkadian origin: bābu ‘gate, door’.