Breather

Breath′er

,

Noun.

1.

One who breathes.

Hence:

(a)

One who lives.

(b)

One who utters.

(c)

One who animates or inspires.

2.

That which puts one out of breath, as violent exercise.

[Colloq.]

,

Noun.

One that breathes or lives; one that utters; an inspirer, one who animates or infuses by inspiration.

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.

something that breathes

short break

physics: kind of excitation