1. overbank - Adjective
2. overbank - Verb
English Wikipedia has an article on:overbankWikipedia
overbank (not comparable)
(geology) Describing sediments deposited on a floodplain from suspensions in floodwaters
overbank (third-person singular simple present overbanks, present participle overbanking, simple past and past participle overbanked)
(of an aircraft) To bank excessively