What's the difference?
dribble - definition. American English definition of dribble by Macmillan Dictionary
Dripple is found in Webster's 1828 and 1913 dictionaries:
Browse 1828 => Word DRIPPLE :: Search the 1828 Noah Webster's Dictionary of the English Language (FREE) :: 1828.mshaffer.com
ARTFL Project: Webster Dictionary, 1913
This word is obsolete.