Plural in form in form but singular in meaning?

Question

Plural in form in form but singular in meaning?

Answer 1

Dice.

Answer 2

My pants are torn. (Nowadays you will sometimes see this word as a singular "pant" [meaning one pair of pants] especially in clothing ads, but most writers would regard that as an affectation.)

Her scissors were stolen.

The glasses have slipped down his nose again