The Proto-Semitic word baḥr
Word baḥr
Meaning sea, lake
Synonyms yamm

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
maʾ, may ‘water’