Geez

ˁallama - to write, to seal, to teach, to make a sign, to mark (CDG 61)

Kogan 2015:40, note 93: “Gez. ˁallama ‘to write, to seal, to teach, to make a sign, to mark’ (CDG 61) and related EthS forms are rightly considered Arabisms by Leslau.”

PCS
*ˁlm - (to) sign (Kogan 2015:40, note 94)
Contra HALOT 834, there is hardly any connection with Hbr. ˁlm ‘to be hidden, concealed.’