Definition from Wiktionary, the free dictionary
Etymology 1 
- (transitive) To rub or wear off; erode. [First attested in the late 17th century.]
- (transitive) To wear down or exhaust, as a person; irritate. [First attested in the mid 18th century.]
- (transitive) To irritate by rubbing; chafe. [First attested in the mid 18th century.]
- (transitive) To cause the surface to become more rough.
- (intransitive) To undergo abrasion.
(transitive) to rub or wear off; to waste or wear away by friction
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Etymology 2 
From Old English abraiden.
- 2003 , Brown, Lesley editor, The Shorter Oxford English Dictionary, edition 5th, Oxford, UK: Oxford University Press, ISBN 978-0-19-860575-7, page 7:
- third-person singular present indicative of abradere
- second-person singular present active imperative of abrādō