intransitive verb
1. : to begin to play (as on a pipe) or to sing or speak
a few of us would like to pipe up … against this — C.E.Montague
2. of the wind : to increase in strength
intransitive verb
1. : to begin to play (as on a pipe) or to sing or speak
a few of us would like to pipe up … against this — C.E.Montague
2. of the wind : to increase in strength
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012