Jastrow, קְרַר

קְרַר, קוֹר ch. same
    Polel. - קוֹרֵר to cause to spring forth, give forth. Y. Shek. V, 48ᵈ הוה ידע … מְקוֹרֵר וכ׳ he knew what rock gives forth water (when bored at), and in what rock there is dry heat.