breather

noun6

1. •
   Something or someone that breathes.
2. •
   (informal) A short break; a rest or respite.

   • After a short breather she was ready to continue up the hill.
3. •
   A heavy breather.

   • Most of us make sense of the world through talk and sight, and breathers represent that most anxiety provoking experience, nothingness with a hint of possibility. — 1981
4. •
   An air inlet path to the crankcase
5. •
   (informal, old-fashioned) That which puts one out of breath, such as vigorous exercise.
6. •
   A spatially localized, time-periodic excitation in a one-dimensional lattice.