stepladder
step‧lad‧der /ˈstepˌlædə $ -ər/
noun [countable]

a ladder which has two sloping parts that are joined at the top so that it can stand without support, and which can be folded flat
step‧lad‧der /ˈstepˌlædə $ -ər/
noun [countable]
a ladder which has two sloping parts that are joined at the top so that it can stand without support, and which can be folded flat