n. <美> [兽医]马慢性肺气肿

[ noun ]
a chronic emphysema of the horse that causes difficult expiration and heaving of the flanks
<noun.state>

Heaves \Heaves\, n.
A disease of horses, characterized by difficult breathing,
with heaving of the flank, wheezing, flatulency, and a
peculiar cough; broken wind.