running-board

n (formerly) foot-board under the doors of a car （旧时）汽车车门下方的踏板.

run-in, run-of-the-mill, run-off, run-through, run-up, runabout, runaway, rune, rung, runic, runnel, runner, runner bean (also string bean), runner-up, running, running commentary, running mate, running repairs, running stitch, running total, runny, runt, runway, rupee, rupture, rural, rural dean, rural delivery, Ruritanian, ruse, rush, rush hour, rush into, rush out, rush sb. to..., rush through, rush-hour, rushy, rusk, russet,