Expressions (phrases, clauses, etc.), Godan verb with 'mu' ending
to stumble a step or two forward (when trying to stop); to pass one's destination and stumble a step or two forward; to totter
Idiomatic expression
Also written 踏鞴を踏む【たたらをふむ】、蹈鞴を踏む【たたらをふむ】