The Proto-Semitic word ḥalīb
Word ḥalīb
Meaning milk

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
šVtVy ‘drink’, bVlaʿ ‘to swallow, to eat’, tVʾ, tVw ‘to eat’, ʾVkul ‘to eat’, *wayn- ‘wine’