At age seven, he fell off a horse and his head struck a rock.

His head struck the side of the lift, and then- Everything went dark.

It sounded as if some head had struck a rock.

His head struck something hard and things became more hazy about him than ever.

His head struck the pew in front of him and down he went.

The old man's head must have struck against the table.

His head struck something hard, and after that he found it difficult to concentrate.

Then his head struck a beam, and the lights went out.

My head too struck the ground; and I lay stunned.

The fall knocked the wind out of him, but his head didn't strike ground.