a roland for an oliver

/AH0 R OW0 L AH0 N D F AO0 R AE0 N AA0 L AH0 V ER0/
noun
  1. 1

    (idiomatic) Equal measure; measure for measure; adequate response.

adverb
  1. 1

    (idiomatic, not comparable) So as to respond to an action with an equivalent action; tit for tat.