ladder
noun(lad-der)
a row of unravelled stitches
ladder
verb(lad-der)
come unraveled or undone as if by snagging
ladder
noun(lad-der)
ascending stages by which somebody or something can progress
Examples:
He climbed the career ladder.
ladder
noun(lad-der)
steps consisting of two parallel members connected by rungs; for climbing up or down