pulse-jet engine
noun
ˈpəls-ˈjet- 
: a jet engine designed to produce a pulsating thrust by the intermittent flow of hot gases
Word History
First Known Use
1946, in the meaning defined above
- scratch division
- scratch gauge
- scratch grass
- scratch hit
- scratch line
- scratch off
- scratch one's back
- scratch one's head
- scratch out
- scratch out a living
- scratch pad
- scratch pads
- scratch paper
- scratch sheet
- scratch someone's back
- scratch test
- scratch that itch
- scratch the itch
- scratch the surface
- scratch the/an itch
- scratch the/that itch
- scratch ticket
- scratch wig
- scratch-farming
- scratchable