A ladder rung is one of the steps you climb on a ladder. A broken ladder rung, the top ladder rung, three ladder rungs up.
Standing on the top ladder rung is the commonest way to fall, which is why the label tells you not to. The word is also used figuratively for a step in a career or a housing market.
1nounladder rungOne of the steps you climb on a ladder.
“He put his foot through a rotten ladder rung.”
ladder rung is a part.
Practised in Tools & DIY