from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of various plants of the genera Trifolium, Lotus, and related genera of the pea family, having compound trifoliate leaves.
- n. An ornament, symbol, or architectural form having the appearance of a trifoliate leaf.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of several plants of the pea family, having compound, trifoliate leaves; especially one of the genus Trifolium.
- n. A symbol having the shape of such leaves, especially when used as an architectural ornament.
from the GNU version of the Collaborative International Dictionary of English
- n. Any plant of the genus Trifolium, which includes the white clover, red clover, etc.; -- less properly, applied also to the nonesuch, or black medic. See clover, and medic.
- n. An ornamental foliation consisting of three divisions, or foils.
- n. A charge representing the clover leaf.
from The Century Dictionary and Cyclopedia
- n. In anatomy, the triangular area which forms the front part of a molar tooth; the protocone, paracone, and metacone lying at the angles. Same as trigon, 6.
- n. A plant of the genus Trifolium; clover.
- n. The third leaf put forth by a young plant.
- n. An ornamental feathering or foliation used in medieval Pointed architecture in the heads of window-lights, tracery, panelings, etc., in which the spaces between the cusps represent a three-lobed figure.
- n. In heraldry, a bearing supposed to represent a clover-leaf.
- n. A bombycid moth, Lasiocampa trifolii, whose larva feeds on grass and clover in Europe. Also called grass-egger and clover-egger.
- Characterized by the presence or prominence of a trefoil or trefoils; consisting of trefoils; thrice foliated.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. any of several Old World herbs of the genus Medicago having small flowers and trifoliate compound leaves
- n. a plant of the genus Trifolium
- n. an architectural ornament in the form of three arcs arranged in a circle
Middle English, from Anglo-Norman trifoil, from Latin trifolium : tri-, tri- + folium, leaf.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Anglo-Norman trifoil < Old French trefeuil < Latin trifolium < tri- + folium (leaf). (Wiktionary)