Le curling (masculine noun): J'aime le curling (I like curling)

Du curling: j'ai fait du curling (I played curling)

No. A curling iron does NOT have silver in it!!.. There are silver curling irons but there are no curling irons with silver in them!

Curling...Oh, how I hate Curling. :P

If you mean 'curling (your hair)':

Are you curling tonight = Ensortijas anoche?

If you mean the game of curling (on ice), there is no Spanish equivalent, so you'd have to say:

Juegas a 'curling' anoche = Are you playing at 'curling' tonight?

the main pieces you need for curling are a good pair of curling shoes, curling gloves, a slider for your shoe, and a broom, the rocks are provided by the curling arena.