noun
plural -ders
a dry substance made up of very tiny pieces of something [noncount]
[noncount] :a very fine, dry substance that is put on your body or face especially to make it dry or less shiny
[noncount] :snow that is very light and dry
[noncount] :gunpowder - see also powder keg
keep your powder dry
old-fashioned :to be calm and ready for a possible problem in the future
take a powder
US informal + old-fashioned :to leave suddenly and quickly
verb
-ders; -dered; -dering
[+ obj] :to put powder on (your face or body)
powder your nose
somewhat old-fashioned - used by women as a polite way of excusing themselves from a table, conversation, etc., to go to the bathroom