BT Šab 129a(50) :לא ליתיב היכא דכריך זיקא‏ : he should not sit where the whirlwind is whirling around
See the entire entry for krk vb. to go around, wrap around

BT Šab 129a(50) :האי מאן דעביד מילתא לא ליתיב היכא דכריך זיקא‏ : one who has had bloodletting should not sit where the wind is swirling around
See the entire entry for mi/ellā, mi/elləṯā n.f. word, speech; thing