squeeze box

noun

1. 1.A small, portable, keyed wind instrument, whose tones are generated by play of the wind from a squeezed bellows upon free metallic reeds.
2. 2.A vertical list of items that can be individually expanded and collapsed to reveal their contents.
3. 3.A therapeutic device designed to apply pressure to the body of a hypersensitive person (usually someone on the autism spectrum) in order to calm them by providing grounding sensory stimulation.
4. 4.A box with an adjustable opening used by cavers to practise crawling through tight spaces.
5. 5.A container that fits tightly around an animal to immobilize it for medical treatment, transportation, etc.