spring-loaded 
adjective
Containing a compressed or stretched spring pressing one part against another: a spring-loaded clothes peg...
- The doors are spring-loaded so that, at the point of being halfway closed, the spring will take over and slam the door shut and hold it closed.
- In the market I found almost everyone sold heavy, serrated, spring-loaded metal rattraps.
- This knife was like a switchblade, except that the blade was spring-loaded to shoot straight out of the handle and lock when you pressed the release button, rather than opening sideways.
Rhymes
- microsmatic
- micro-social
- microsociety
- microsociolinguistic
- microsociolinguistics
- microsomal
- microsome
- microsomia
- microsommite
- microspecies
- microspectroscope
- microspectroscopic
- microspectroscopy
- microspermous
- Microsphaera
- microsphere
- microspheric
- microspherulitic
- microspike
- microspined
- microsporangiate
- microsporangium
- microspore
- microsporic
- microsporidian