—v.t. 1. to put each in the place of the other: to interchange pieces of modular furniture. 2. to cause (one thing) to change places with another; transpose.
3. to give and receive (things) reciprocally; exchange: The twins interchanged clothes frequently. 4. to cause to follow one another alternately; alternate: to interchange business cares with pleasures.
—v.i. 1. to occur by turns or in succession; alternate.
2. to change places, as two persons or things, or as one with another.
—n. 1. an act or instance of interchanging; reciprocal exchange: the interchange of commodities. 2. a changing of places, as between two persons or things, or of one with another.
3. alternation; alternate succession.
4. a highway intersection consisting of a system of several different road levels arranged so that vehicles may move from one road to another without crossing the streams of traffic.