ladder
US /ˈlæd.ɚ/
UK /ˈlæd.ɚ/

1.
a piece of equipment consisting of a series of bars or steps between two upright lengths of wood or metal, used for climbing up or down something
:
•
He climbed the ladder to reach the roof.
•
Be careful when you're on the ladder.
2.
a series of stages by which people can make progress or advance in their career or social status
:
•
She quickly moved up the corporate ladder.
•
Education is often seen as a social ladder.
1.
to climb or ascend using a ladder
:
•
He had to ladder up to fix the antenna.
2.
to cause a run or a series of pulled threads in a stocking or tights
:
•
Oh no, I've laddered my tights!