Ladder

Noun

• (figuratively) A series of stages by which one progresses to a better position.
• In the game of go, a sequence of moves following a zigzag pattern and ultimately leading to the capture of the attacked stones.
• A frame, usually portable, of wood, metal, or rope, used for ascent and descent, consisting of two side pieces to which are fastened rungs: cross strips or rounds acting as steps.
• (chiefly Britain) A length of unravelled fabric in a knitted garment, especially in nylon stockings; a run.
• The hierarchy or ranking system within an organization, e.g. the corporate ladder.

Verb

• (of a knitted garment) To develop a ladder as a result of a broken thread.
• (firefighting) To ascend a building or wall using a ladder.