1.
If you ~, you attempt to hit someone quickly and violently with a weapon or with your hands or feet.
Riot police fired in the air and lashed out with clubs to disperse hundreds of demonstrators...
Her husband has a terrible temper and lashes out at her when he’s angry.
PHRASAL VERB: V P, V P at n
2.
If you ~ at someone or something, you speak to them or about them very angrily or critically.
As a politician Jefferson frequently lashed out at the press...
PHRASAL VERB: V P at/against n