The Proto-Semitic word bin
Word bin
Meaning son
See also Safaitic: bn ‘son’
Synonyms bar

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
ʔns ‘person, man’, ʾab ‘father’, ʾin(a)š ‘man’, ʾam ‘maid, girl’, nišw ‘woman’, ʾaḫ ‘brother’, walad ‘boy, child’