[verb] [T]Powder (= Put special powder on) the baby's bottom to stop it chafing.I'll just powder my nose - it's looking a bit shiny.Saying that you are going to go and powder your nose is a polite or humorous way of saying that you are going to go to the toilet.Would you get me another drink while I go and powder my nose?
POWDER
Meaning of POWDER in English
Cambridge English vocab. Кембриджский английский словарь. 2012