פָּתוּחַ, (פָּתַח) opening, open top. Sifré Num. 126 (ref. to פתוח, Num. XIX, 15) כלי … דרך פְּתוּחוֹ a vessel that receives uncleanness through its open top; ib. על פתוחו אמרתי וכ׳ I speak (the text speaks) only of the open top (inside), but not of the entire vessel; (Yalk. Num. 762 פִּתְחוֹ).—[Ib. פ׳ זה העורף, read: פָּתִיל.]