BT San 29b(4)var. :ההוא דא{כ}<ט>מין עדים לחבריה בכילתא‏ : one who had witnesses hidden in a closet against his comrade
See the entire entry for ṭmn vb. to hide, to conceal, to store

BT San 29b(4) :ההוא דאכמין עדים לחבריה בכילתא‏ : a certain person who concealed witnesses against another in a closet
See the entire entry for kmn vb. to lie in ambush