(law) a proceeding that permits a person to enter into a lawsuit already in progress; admission of person not an original party to the suit so that person can protect some right or interest that is allegedly affected by the proceedings; "the purpose of intervention is to prevent unnecessary duplication of lawsuits"
the act of intervening (as to mediate a dispute)
a policy of intervening in the affairs of other countries
something that provides access (to get in or get out); "they waited at the entrance to the garden"; "beggars waited just outside the entryway to the cathedral"
some abrupt occurrence that interrupts an ongoing activity; "the telephone is an annoying interruption"; "there was a break in the action when a player was hurt"