The Proto-Semitic word gbl
Word gbl
Meaning mountain

Comments
Kaye, Alan S. "Christopher Ehret. Reconstructing Proto-Afroasiatic (Proto-Afrasian): Vowels, Tone, Consonants, and Vocabulary", University of California 1995

Other words that might be of interest
ʾadam ‘earth’, ʾarṣ̂ ‘earth’, ḥaḳl ‘field’, gabʿ, gibʿ ‘hill, height’, tall, till ‘hill’, ʿiṣ̂ ‘tree’