Answer:
The answer is adjective.
Step-by-step explanation:
Participle is a non-finite verb form that doesn`t have the function of the verb, but as a noun modifier, that means that its primary function is function of an adjective.
There are two types of participle - present participle and perfect participle. Present participle ends on -ing, the ending of perfect participle depends on whether the verb is regular or irregular; its form we can find in the third colon of conventional verb naming (to see - saw - seen; to play - played - played).
For example:
I met a singing man.
She solved a complicated puzzle.
They visited a forbidden place.