שְׁרַר (preced.) to chain, knot.—Part. pass. שָׁרִיר, q. v.
Pa. - שָׁרֵיר to make strong, hard. Sabb. 74ᵇ מהו דתימא לשָׁרוּרֵי מנא וכ׳ you may have thought that (by putting a green plug into a stove) he intends to make of it a hard coulter (v. מָאנָא); Ab. Zar. 38ᵃ
Ithpa. - אִשְׁתָּרֵיר to become hard. Nidd. 48ᵇ top אִשְׁתָּרוּר דדיך Var. Ar. ed. Koh. s. v. כרף thy breasts have become hard, v. שְׁדַר II, a. כְּרף.