Wiktionary
bash out
vb. 1 To write something very quickly, without much thought. 2 To play (a tune) clumsily on a piano or similar instrument.
Usage examples of "bash out".
It looked as if he would have to bash out astairway of sorts, tedious as that would be.
Maybe she could bash out the glass, then hide in a stall, and they would search for a fleeing man outside.
He had fallen down while trying to bash out the ramp, so the dragon could not reach the ledge.
His literally incredible speed enabled him not merely to parry a blow aimed at him, but to bash out the brains of the would-be attacker before that blow could be more than started.
Each time we depressed a key, the teletype would bash out a letter on the paper in front of us, so we could read what we'd typed.