This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. A representation of a flower with four petals or a leaf with four leaflets, especially in heraldry.

n. Architecture Tracery or an ornament with four foils or lobes.

n. a symmetrical shape which forms the overall outline of four partially-overlapping circles of the same diameter.

n. A stylized flower or leaf with four lobes.

n. A leaf with four leaflets, as sometimes that of clover.

n. In architecture, an opening or a panel divided by cusps or foliations into four foils, or, more correctly, the figure formed by the cusps.

n. In heraldry, a four-leaved grass, or leaf divided into four leaflets, used as a bearing.

"Above the quatrefoil is another representing the Redeemer seated on a cushioned throne with the Virgin, and below another representing St. Michael overcoming Satan."

double quatrefoil    cross quatrefoil   

shamrock    milkwort    sainfoin    flower-de-luce    whortleberry