Used in botany to describe a specific leaf shape. Helpful for scientific and gardening discussions. The botanist pointed out the trefoil configuration in the plant sample.
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Nature imagery
Evokes natural settings and is often associated with fields or meadows. Children enjoyed finding trefoils on their nature walk.
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Symbol of luck
A trefoil, especially a clover, is often considered a symbol of good fortune. She wore a trefoil pendant for luck.