The adj breathless has 3 senses (first 2 from tagged texts)
1. (5) breathless, dyspneic, dyspnoeic, dyspneal, dyspnoeal -- (not breathing or able to breathe except with difficulty; "breathless at thought of what I had done"; "breathless from running"; "followed the match with breathless interest")
2. (1) breathless, breathtaking -- (tending to cause suspension of regular breathing; "a breathless flight"; "breathtaking adventure")
3. breathless, inanimate, pulseless -- (appearing dead; not breathing or having no perceptible pulse; "an inanimate body"; "pulseless and dead")