Real Dictionary

past participle
countable noun: In grammar, the past participle of a verb is a form that is usually the same as the past form and so ends in '-ed'. A number of verbs have irregular past participles, for example ' break' (past participle 'broken'), and ' come' (past participle 'come'). P

past participle in American English
a participle used a) with auxiliaries to express, typically, completed action or a time or state gone by (Ex.: spoken in “he has spoken”) b) with auxiliaries to form the passive voice (Ex.: eaten in “the snails were all eaten in a moment”) c) as an adject
a participle with past, perfect, or passive meaning, as fallen, sung, defeated; perfect participle: used in English and other languages in forming the present perfect, pluperfect, and passive and as an adjective

past participle in British English
noun: a participial form of verbs used to modify a noun that is logically the object of a verb, also used in certain compound tenses and passive forms of the verb in English and other languages