Definition of overest in English:

overest

Pronunciation /ˈəʊv(ə)rɪst/

adjective

rare Canadian
  • Highest in position, uppermost; outermost, covering all the rest; farthest away.

Origin

Middle English; earliest use found in Statutes of the Realm. Superlative of over. Compare Old High German obarōst, adverb, obarōsto, adjective (Middle High German oberest, adjective, German oberst (adjective) highest, Oberst (noun) superior, colonel).