channel

avenue carrier means medium route tunnel

approach aqueduct arroyo artery canal canyon chamber chase conduit course dig ditch duct fluting furrow gouge groove gully gutter main pass passage pipe raceway runway sewer slit sound strait tideway trough tube vein watercourse way

closure denial refusal veto

agency avenue instrument medium route vehicle

agent approach course instrumentality instrumentation ministry organ way

end

carry convey funnel siphon transmit transport

conduct pipe route send

traject

hold keep