As a noun trifoly
is (obsolete) melilot; sweet clover.
As an adjective trifold is
threefold.
trifoly
English
Noun
(obsolete) melilot; sweet clover
* (rfdate) (Ben Jonson)
- She was crowned with a chaplet of trifoly .
(
Webster 1913)
trifold
English
Adjective
(-)
threefold