שָׁלַשׁ
From LSJ
Ποιητὴς, ὁπόταν ἐν τῷ τρίποδι τῆς Μούσης καθίζηται, τότε οὐκ ἔμφρων ἐστίν → Whenever a poet is seated on the Muses' tripod, he is not in his senses
English (Strong)
a primitive root perhaps originally to intensify, i.e. treble; but apparently used only as denominative from שָׁלוֹשׁ, to be (causatively, make) triplicate (by restoration, in portions, strands, days or years): do the third time, (divide into, stay) three (days, - fold, parts, years old).