Sorry?

Not one I've heard of. Assuming you mean something else, here's an idea of what I'm guessing you mean...

Trilling is repeatedly hammering on / pulling off between two notes at high speed, possibly moving around as you do, but keeping up the alternating pitch and speed.

Vibrato is fretting a note, and then either moving your finger rapidly side to side (horizontal or classical vibrato), or up and down (wide or 'rock' vibrato).

I have just found one internet reference to trillato, which seems to be what I know as tremolo picking - basically alternate picking as fast as possible on one string, and shifting up and down - like Miserlou by Dick Dale.....