What is Ladder?

Ladder definition and meaning on Dictionary terms:
a structure of wood, metal, or rope, commonly consisting of two sidepieces between which a series of bars or rungs are set at suitable distances, forming a means of climbing up or down.
something resembling this.

a means of rising, as to eminence: the ladder of success.
a graded series of stages or levels in status; a hierarchical order of position or rank: high on the political ladder.
Nautical. companionway(def 1).
Chiefly British. a run in a stocking.

verb (used with object)
to climb or mount by means of a ladder: to ladder a wall.
to furnish with a ladder: to ladder a water tower.

Chiefly British. to cause a run in (a stocking).

verb (used without object)
Chiefly British. to get a run, as in a stocking.
to gain in popularity or importance: He laddered to the top of his profession.