The term ADIT is a noun that refers to an ENTRANCE or passage into a MINE, typically one that is horizontal or nearly horizontal. It can also refer to a TUNNEL or PASSAGEWAY leading into a MINE. The crossword solutions for the term ADIT include ENTRY (5 letters), RAMP (4 letters), ENTRANCE (8 letters), ENTREE (6 letters), PASSAGEWAY (10 letters), TUNNEL (6 letters), and MINE (4 letters). All of these words are related to the concept of an ENTRANCE or passage into a MINE, which is what ADIT refers to.