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lead pencil a writing or drawing implement consisting of a thin rod of graphite encased in wood.
lead poisoning chronic or acute poisoning caused by the ingestion, inhalation, or absorption through the skin of lead or lead salts, characterized by anemia, constipation, abdominal pain, or convulsions, and sometimes resulting in paralysis or coma.
lead tetraethyl see tetraethyl lead.
lead time the period of time between the decision to begin a project and its completion, as between the planning and completed manufacture of a product.
leaf one of the usu. green, flat parts of a plant that grow from the stem or branch and produce food by photosynthesis, or a similar growth or structure. [7 definitions]
leafage leaves collectively; foliage.
leaf bud a bud that produces stems and leaves, but not flowers.
leaf hopper any of a family of insects that leap from one plant to another, sucking the juices and often transmitting plant diseases.
leaf insect any of various sluggish winged insects having a leaflike body in color and form.
leaf lard lard of the highest quality.
leafless combined form of leaf.
leaflet a piece of paper, often folded, that contains printed information or advertisements and is usu. distributed free of charge. [3 definitions]
leaf miner any of the larvae of various small flies and moths that burrow into and eat leaves.
leaf mold compost or rich soil consisting of decomposed leaves. [2 definitions]
leaf spot any of various plant diseases characterized by lesions or spots on the leaves.
leaf spring a long narrow spring made up of several strips or layers of metal, used in automobile suspensions and the like.
leafstalk the slender stalk by which a leaf is attached to a stem; petiole.
leafy of, covered with, or consisting of leaves. [2 definitions]
league1 an association or compact of nations, groups, or people, formally established to advance a common cause. [4 definitions]
league2 a unit of length equal to about three miles or 4.8 kilometers. [2 definitions]
League of Nations an international federation of nations founded in 1919 to promote world peace and cooperation, formally disbanded in 1946, and superseded by the United Nations.