ⲕⲟⲣⲓ B (noun)
(noun)
skylight, trap-door
complete
115b

ⲕⲟⲣⲓ B nn, skylight, trap-door: K 153 روزنة.

See also:
view ϣⲟⲩϣⲧ SLB ϣⲱϣⲧ SA (noun masculine) window [θυρις]
niche, alcove [θυρις]