Proto-MSA

*rḳff - to be broad, spacious; to stretch, spread (Kogan 2015:595)

Jibbali
erḳəféf - to give st. a broad, spacious surface; to make flat, flatten (JL 213)
Jibbali
erḳəfɔ́f - broad (person) (JL 213; MLZ 391)