noun, noun or participle which takes 'suru'
going east; eastward travel
Refers to the act of traveling east or heading in an easterly direction. Can be used as a noun or with する to mean 'to go east'.
列車は東行している。
The train is heading east.
東行の船に乗る。
I board an eastbound ship.
Compound of 東 (east) and 行 (going). The reading とうこう follows standard on'yomi.