Definition of breathers:
(n) :
A short break; a rest or respite.
(n) :
Something or someone that breathes.
(n) :
(specifically) A heavy breather.
(n) :
(colloquial, dated) That which puts one out of breath, such as violent exercise.
(n) :
(mechanics) An air inlet path to the crankcase
(n) :
(physics) A spatially localized, time-periodic excitation in a one-dimensional lattice.