Webster's Revised Unabridged Dictionary · 1913

Breathless

Breathless (breth"les) , adjective

1.
Spent with labor or violent action; out of breath.
2.
Not breathing; holding the breath, on account of fear, expectation, or intense interest; attended with a holding of the breath; as, breathless attention.
But breathless, as we grow when feeling most. — Byron
3.
Dead; as, a breathless body.