From Longman Dictionary of Contemporary Englishdumb showˈdumb show noun [countable, uncountable] APTthe use of movements without words to express something → mime
Examples from the Corpus
dumb show• In a disturbing dumb show of sorry heterosexual seduction, she lured him inside and up the stairs.• They laughed when they saw the tea, and demonstrated in dumb show how it should really be made. 