Definitions
1.nounA recondite (hidden or obscure) person or thing.
2.nounA scholar or other person who is recondite, that is, who has mastery over his or her field, including its esoteric minutiae.
3.verbTo conceal, cover up, hide.
4.adjectiveOf areas of discussion or research: difficult, obscure.
5.adjective(somewhat obsolete) Hidden or removed from view.