Definition of "adverbial" []

• Of, relating to, or being an adverb. (adjective)
• An adverbial element or phrase. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "I've seen a lot more put after the verb, but I think this isn't considered good style unless some kind of adverbial like 'diye' saying is involved."
• "I notice that the Longman Grammar of Spoken and Written English (Biber et al. 1999) calls the adverbial type of phrasal verb (like ‘look up’) “phrasal verb” and the prepositional type (like ‘take after) “prepositional verb”."
• "A participle may be equivalent not only to a clause describing or determining the substantive modified, as in "la parolanta viro", the man who-is-talking, "la sendota knabo", the boy who-will-be-sent, but also to an "adverbial" clause."