two-way
Concise Oxford English Dictionary © 2008 Oxford University Press:
two-way
▶adjective
- 1 involving movement or communication in opposite directions.
- 2 (of a switch) permitting a current to be switched on or off from either of two points.
– phrases
two-way street a situation involving mutual or reciprocal action or obligation.
two-way street a situation involving mutual or reciprocal action or obligation.
'two-way' also found in these Oxford entries:

