brandish
Brandish (verb) means to wave or swing a weapon around, often to show anger, threaten someone or display skill.
Etymology
Came into English via Middle English braundischen, from Old French brandiss-, the stem of brandir (“to flourish a sword”), from Frankish *brandijan, from Frankish *brand (“firebrand; sword”), from Proto-Germanic *brandaz (“fire; flame; sword”), from which Old English brand (“firebrand; torch”) also descends; equivalent to brand plus -ish. See more at brand.