The action of mee-maw ; specifically the action of making exaggerated movements with the lips when speaking, especially in order to be understood above a loud noise; gesticulation.
1970s; earliest use found in Peter Wright (b. 1923). From mee-maw + -ing.
Late 19th century; earliest use found in Edwin Waugh (1817–1890), poet. From mee-maw + -ing.