Definition from Wiktionary, the free dictionary
breather (plural breathers)
- Something or someone that breathes.
- A short break; a rest or respite.
- After a short breather she was ready to continue up the hill.
- (physics) A spatially localized, time-periodic excitation in a one-dimensional lattice.
- (colloquial, dated) That which puts one out of breath, such as violent exercise.
- (mechanics) An air inlet path to the crankcase
something that breathes
physics: kind of excitation