שֵׁשׁ

From LSJ

Ἡρακλέους ὀργήν τιν' ἔχων → with a temper like Heracles', with a temper like Hercules'

Source

English (Strong)

masculine shishshah; a primitive number; six (as an overplus (see שׂוּשׂ) beyond five or the fingers of the hand); as ord. sixth: six((-teen, -teenth)), sixth.
or (for alliteration with מֶ֫שִׁי) shshiy; for שַׁ֫יִשׁ; bleached stuff, i.e. white linen or (by analogy) marble: X blue, fine ((twined)) linen, marble, silk.