Concise Bible Dictionary:
The Greek word implies that the disease was a collection of water, which is the well known characteristic of dropsy (Luke 14:2).
Strong’s Dictionary of Greek Words:
Transliteration:
hudropikos
Meaning:
from a compound of 5204 and a derivative of 3700 (as if looking watery); to be "dropsical"
KJV Usage:
have the dropsy