Answer: RUNG

AnswerCrossword Clue
RUNGPart of a chair.
RUNGNotch on the ladder
RUNGStep of a sort
RUNGClimbing aid
RUNGStep
RUNGLadder level
RUNGPlace to step
RUNGStepladder step
RUNGKind of crossbar
RUNGMetaphor for a promotion
RUNGStep of a ladder.
RUNGLevel, metaphorically
RUNGBrace on a chair.
RUNGPart of a wheel.
RUNGSpoke of a wheel.
RUNGChair part.
RUNGPart of a ladder.
RUNGWheel spoke.
RUNGLadder footpiece.
RUNGSpoke.
rungcharacteristic quality
RUNGHelp on the way up
RUNGLadder bar
RUNGPart of a ladder
RUNGStep up
RUNGLadder step
RUNGHierarchy level
RUNGLevel in a hierarchy
RUNGStep on a ladder
RUNGLadder support
RUNGSpoke
RUNGA step up
RUNGLadder section
RUNGChair leg crosspiece
RUNGLadder crosspiece
RUNGLadder part
RUNGLadder segment
RUNGCrosspiece
RUNGLadder foothold
RUNGA step up, maybe?