pipn.[OE. pippe, D. pip, or F. ppie; from LL. pipita, fr. L. pituita slime, phlegm, rheum, in fowls, the pip. Cf. Pituite.] A contagious disease of fowls, characterized by hoarseness, discharge from the nostrils and eyes, and an accumulation of mucus in the mouth, forming a scale on the tongue. By some the term pip is restricted to this last symptom, the disease being called roup by them.()n.[Formerly pippin, pepin. Cf. Pippin.] (Bot.) A seed, as of an apple or orange.()n.[Perh. for pick, F. pique a spade at cards, a pike. Cf. Pique.] One of the conventional figures or spots on playing cards, dominoes, etc.(Addison.)v. i.[See Peep.] To cry or chirp, as a chicken; to peep.()To hear the chick pip and cry in the egg. (Boyle.)