grass BrE informal ***
grass somebody up BrE informal
grass on somebody BrE informal

My mother grassed me up, she went to the police.

Or Neville had grassed on me, which is probably more likely.

A bit of loose drink talk and you were grassed up.

She went to prison after the Guardian grassed her up.

The bottom terrace was grassed over to provide a playing field.

It could have been grassed or paved, impossible to tell now.

This is now grassed over and just one old warehouse still stands.

The area where the second carriageway would have been is grassed.

The whole cemetery is grassed, a few individual trees breaking the view.

The ground, thickly grassed, was a good enough mattress for him.

After the tram service ended, the island was grassed over to become the Green.

I was grassed up by my mate who got nervous and turned Queen's evidence.

Cow Green: 67 visitors grassed 174 fish, small black flies best.

"Yeah, she's the one who grassed on our Sharon," she replied.

The ground around the lime tree is not sealed, but partly grassed over.

The grave (now grassed) can still be seen in the churchyard.

There is limited native bush as most of the land is grassed.

Could be I set him up, grassed him to whoever was in the bar.

Now, the central area is grassed over and is home to a group of old plane trees.

Both platforms still remain here and although grassed over are easily detectable.

Leighton Reservoir: 126 visitors grassed a total of 290 fish.

Best of all, he'd grassed too far to back out, even if the threat of a murder charge lost its effect.

Ended up doing an eighteen for armed robbery after Archie grassed him.

The area was grassed and planted with chestnut trees.

The "river" was filled in and grassed in 1728.