What was it, some sort of Masonic symbol?

No, the Freemasons killed her, because the tunnel in which she died was decorated with ancient masonic symbols.

It features both Masonic symbols and the signs of the Zodiac.

A lower transom is etched with the Masonic symbol.

The amulet Flynn's father used to wear when he was a kid is actually a Masonic symbol.

Shopland Hall, the small theater on the fourth floor, contains many Masonic symbols.

It is either used to symbolise someone whose life ended prematurely, or is a masonic symbol.

The Masonic symbol embroidered in lieu of a monogram told him to whom it belonged.

The three plumes that decorate a hearse and the Masonic symbol were some others.

The Masonic symbols on the façade are typical of Webster's designs.