שָׁמִיר, [pointed,] thorn; flint, diamond; (in legend) shamir, a worm that cuts stones with its glance. Sot. IX, 12 משחרב … בטל הש׳ with the destruction of the Temple the shamir ceased to exist. Ib. 48ᵇ; Tosef. ib. XV, 1; Y. ib. IX, 24ᵇ; a. e.