The word Gittish signifies belonging to Gath. It probably denotes either a musical instrument or a kind of music derived from Gath, where David sojourned for a time during the persecution of Saul, 1 Samuel 27:1-7 . The word Gath also signifies in Hebrew a winepress. Hence not a few have supposed that it denotes either an instrument or a melody used in the vintage. It is prefixed to Psalm 8:1-9; 81:1 - 16; 84:1-12 , all of which requires an animated strain of music.
Although written in 1859 by William Rand, this dictionary of the Bible from the American Tract Society is still relevant today.Wikipedia
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