A small seating area low to the ground, normally at the bottom of the stairs, where an individual must sit after he/she has conducted an inappropriate act or has been offensive in any other way.
1. "If you hit mummy in the eye again I'll put you on the naughty step!"
2. Michael got caught steeling from the cookie jar, so grandpa Joe had no other choice but to put him on the naughty step for the third time of the day.