BDB8768 [H7991]

II. [שָׁלִישׁ] noun [masculine] plural שָֽׁלִשִׁים, a (three-stringed ? three-barred? three-corned?) musical instrument, perhaps a sistrum (so ᵑ9), or 'triangle' (RVm: compare Prince^{EB iii. 3228}), 1Sam 18:6 (+ בְּתֻפִּים).

The Brown-Driver-Briggs Hebrew and English Lexicon
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