פִּירְכּוּס I, (פִּרְכֵּס I) painting, dyeing the hair; trnsf. giving a fraudulent appearance, deception. B. Mets. 60ᵇ פ׳ דאדם מאי היא what is (in a legal sense) deception in selling a human being? (Answ. dyeing a slave’s hair). Y. ib. IV, end, 9ᵈ יש פירק׳ בכלים (not כאוכלין) giving a deceptive appearance to garments is forbidden Keth. 17ᵃ לא פ׳ there is no paint (deception), v. כּוֹחָל; Snh. 14ᵃ פירכס (corr. acc.).