pass away

pass away  {v.}

1. To slip by; go by; pass.

We had so much fun that the weekend passed away before we realized it.

Forty years had passed away since they had met.

2. To cease to exist; end; disappear; vanish

When automobiles became popular, the use of the horse and buggy passed away.

3. To have your life stop; die.

He passed away at eighty.

Syn.: PASS ON (3), PASS OUT (3).