The phrase "bash against" is correct and usable in written English.
It is usually used to refer to something or someone forcefully hitting against or striking something else. For example, you can say: "The waves were bashing against the rocks on the shoreline".
My only flicker of peril comes as we cross the wind-buffeted rope bridge at Carrick-a-Rede, perched above swirling waves that bash against postcard-perfect cliffs.
While this might seem like a tongue-in-cheek bash against Donald Trump (because of his slogan of "Make America Great Again"), it's more than that.
Video posted to social media shows the man screaming as security personnel pry him out of his chair, causing his head to bash against an armrest.
Punk won another shot at the title at The Great American Bash against Nitro, who had changed his moniker to John Morrison by this point; however, Punk was defeated again by Morrison.
Chavo Guerrero went on to defend the WWE Cruiserweight Championship in a Cruiserweight Open at The Great American Bash against Jimmy Wang Yang, Jamie Noble, Funaki, and Shannon Moore.
Environmentalists will tell you about the danger of nuclear fall-out in case of meltdowns at plants, but the very same green people will bash against wind turbines, coal mining, water harvesting, moon tides, chemical dangers, and just about everything produced by industrial industries today, or created by man's behavior.
The young lads, bashing against one another, thumping their chests.
The truck finally stopped when it bashed against a tree and a cement-block wall.
We were getting bumped a lot now: little bashes against boulders.
They did not inspire sunny thoughts on this gray morning as the ferryboat bashed against little whitecaps.
One of the dancers was now having her head methodically bashed against a glass frame in the door.
