A bit of trivia :
Blimps got their unusual name during WW2
when they were used as flying barriers to impede aircraft
Officially called barrage balloons they gained their nick name , Blimp, from the sound made when you flicked a fully inflated one with your finger
In such strange ways to new words enter our language, we can also thank WW2 for the word Jeep originally GP for General Purpose vehicle.