noun
noun, dated military
1: Someone (or something) contemptible or insignificant. (1910 —) .
2: A small high-velocity shell. (1915 —) .
A. G. Empey Pip Squeak
, Tommy's term for a small German shell which makes a 'pip' and then a 'squeak', when it comes over (1917
).
3: A short, high-pitched sound; (the noise of) a car- or bicycle-horn. (1927 — 63).
4: dated military A radio transmitter used to establish an aeroplane's position. (1943 —) .