two-way

adjective

1. having separate lanes for vehicles going in opposite directions: a two-way street
2. involving reciprocity, mutual obligation, etc.: a two-way cultural exchange, contract, etc.
3. involving two persons, groups, etc.: a two-way political race
4. 1. used for both transmission and reception: a two-way radio
   2. moving, operating, or allowing movement in either of two directions: a two-way faucet, two-way stretch, etc.
5. adapted for use in either of two ways; esp., reversible: a two-way raincoat