meaning of the phrase "tip our glasses"

[Nautica19]

It is people like you who make being in business such a pleasure all year long.
We tip our glasses to you. Thanks again for a wonderful year.

I cannot understand what 'tip our glasses' means and I couldn't find it anywhere.

[Theeny]

I would understand this to mean a toast, although I would say "We raise our glasses to you" instead.