"Yet you think somebody is after the secret symbols?"

Here the children of Sevenwaters had learned strange tongues and secret symbols.

A question mark was their secret symbol.

Well, with all those alleys to search for the secret symbols I chalked, we'd better be going.

If we find the right one, the secret symbols may still lead us to our destination.

Was it true, he asked, that a necktie was a secret symbol of Christianity?

When you find one, look for our secret symbol chalked on it and an arrow pointing the right direction.

You knew the secret symbol of my life, You forced me to that miserable song.

Both employ knowledge of an occult arcanum unknown to the population at large, with secret symbols and words of power.

The group adopted the outline of a hand as its secret symbol.