extension ladder

1. 1.

   a ladder whose length can be extended

   Broaderladder

   Narroweraerial ladder

Questions about extension ladder

What does extension ladder mean?

extension ladder means "a ladder whose length can be extended".

Is extension ladder a common word?

extension ladder is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.