The Collaborative International Dictionary
Three-leaved
Three-leafed \Three"-leafed`\, Three-leaved \Three"-leaved`\, a. (Bot.)
Producing three leaves; as, three-leaved nightshade.
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Consisting of three distinct leaflets; having the leaflets arranged in threes.
Three-leaved nightshade. See Trillium.
Wiktionary
three-leaved
a. Of a plant, having three leaves.
Usage examples of "three-leaved".
Her eyes lit on a trillium, a three-leaved dark red flower that grew amid a patch of velvet ferns.