Pip

Pip (?), n. [OE. pippe, D. pip, or F. pépie; 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.