See Also:

pip(6) (iou)



pip verb1. Infl. -pp-. L16.
[Sense 1 app. var. of PEEP verb1 (cf. CHIP verb2); sense 2 perh. a different word of imit. origin (cf. CHIP verb1).]
verb intrans. Esp. of a young bird: chirp. L16.
verb trans. Of a young bird: crack (the shell of the egg) when hatching. M19.