FROM STRONG’S HEBREW DICTIONARY (1890)

Strong’s Hebrew Dictionary (1890) — public domain, printed whole.

yam yawm — from an unused root meaning to roar; a sea (as breaking in noisy surf) or large body of water; specifically (with the article), the Mediterranean Sea; sometimes a large river, or an artifical basin; locally, the west, or (rarely) the south:--sea (X -faring man, (-shore)), south, west (-ern, side, -ward).