Definition of oniony:
(adj) :
Resembling an onion or onions, especially in terms of smell.
(adj) :
Flavoured with onions.
(adj) :
Resembling or characteristic of the satirical news website The Onion.
(adj) :
Alternative form of oniony (“resembling the satirical news website The Onion”). [Resembling an onion or onions, especially in terms of smell.]