Prunus :: Prunus (n.) A genus of trees with perigynous rosaceous flowers, and a single two-ovuled carpel which usually becomes a drupe in ripening..
Unused :: Unused (a.) Not used; as, an unused book; an unused apartment..
Unused :: Unused (a.) Not habituated; unaccustomed.
Unusual :: Unusual (a.) Not usual; uncommon; rare; as, an unusual season; a person of unusual grace or erudition..