1bash 
/ˈbæʃ/ verb
bash·es; bashed; bash·ing /ˈbæʃ/ verb 1 a [+ obj] : to cause or allow (something, such as part of your body) to hit something very hard or forcefully
▪ She fell down and bashed [=banged] her knee against a rock. ▪ I bashed my arm against the door.
b : to hit (someone or something) very hard or forcefully [+ obj] ▪ Someone bashed him over/on the head with a chair. [no obj] ▪ The two cars bashed [=crashed] into each other.
c [+ obj] : to hurt or damage (something) by hitting or beating
▪ They tried to bash the door open/down. — often + in ▪ He threatened to bash [=beat, smash] my head in. 2 [+ obj] : to criticize or attack (a person or group)
▪ newspapers that use their editorial pages to bash [=harshly criticize] the president ▪ groups accused of gay bashing [=criticizing or attacking gay people] ▪ celebrity bashing
▪ She fell down and bashed [=banged] her knee against a rock. ▪ I bashed my arm against the door.
b : to hit (someone or something) very hard or forcefully [+ obj] ▪ Someone bashed him over/on the head with a chair. [no obj] ▪ The two cars bashed [=crashed] into each other.
c [+ obj] : to hurt or damage (something) by hitting or beating
▪ They tried to bash the door open/down. — often + in ▪ He threatened to bash [=beat, smash] my head in.
▪ newspapers that use their editorial pages to bash [=harshly criticize] the president ▪ groups accused of gay bashing [=criticizing or attacking gay people] ▪ celebrity bashing
bash away
[phrasal verb] Brit, informal : to work hard at something
▪ The children are bashing away [=(US) banging away] at their homework.
▪ The children are bashing away [=(US) banging away] at their homework.
bash on
[phrasal verb] Brit, informal : to continue to work hard at something
▪ You're not finished yet? Well, bash on. [=press on]
▪ You're not finished yet? Well, bash on. [=press on]
bash out [phrasal verb]
bash out (something) or bash (something) out Brit, informal : to produce (something) quickly
▪ He bashed out [=banged out] an angry letter to the editor.
▪ He bashed out [=banged out] an angry letter to the editor.
bash up [phrasal verb]
bash up (someone) or bash (someone) up chiefly Brit, informal : to attack (someone)
▪ A group of older girls bashed up [=beat up] the sisters.
▪ A group of older girls bashed up [=beat up] the sisters.
— basher noun, plural bashers [count]
▪ celebrity bashers [=people who criticize celebrities]
▪ celebrity bashers [=people who criticize celebrities]
