Me to the kids, 'You can't play on Dave's pool table. We are afraid you would tear the green stuff. What's the green stuff called?'
Me, 'Yeah, but there's another name for it. Anyway, you can play if you don't use a cue.'
A few seconds later, 'Baize! I think it's called baize, maybe?'
There was no dictionary at Dave's house, but later I was able to confirm that baize is the green stuff on a pool table.