Dictionary Definition :
Definition[1]
:
Breathing out-not waiting for breathing-in, breathless.
Source
:
A Dictionary of Chinese Buddhist Terms, William Edward Soothill and Lewis Hodous
Definition[2]
:
===(雜語)言無常迅速也。輔行七之三引智度論曰:「有一比丘言:出息不保入息。佛言:是名精進善修無常。」
Source
:
丁福保《佛學大辭典》