■ noun Grammar the form of a verb, ending in -ing in English, which is used in forming continuous tenses, e.g. in I'm thinking , alone in non-finite clauses, e.g. in sitting here, I haven't a care in the world , as a noun, e.g. in good thinking , and as an adjective, e.g. in running water .
PRESENT PARTICIPLE
Meaning of PRESENT PARTICIPLE in English
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004