noun
( grammar ) an adverb used especially after a verb to show position, direction of movement, etc. :
In 'come back', 'break down' and 'fall off', 'back', 'down' and 'off' are all adverbial particles.
noun
( grammar ) an adverb used especially after a verb to show position, direction of movement, etc. :
In 'come back', 'break down' and 'fall off', 'back', 'down' and 'off' are all adverbial particles.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005