From The Collaborative International Dictionary of English v.0.44 [gcide]:
4. A printed sheet of paper, of one page, or one sheet folded over, containing an advertisement, tract, or other notice, and usually distributed for free or included in the package with a purchased item. [PJC]
From WordNet (r) 2.0 [wn]:
From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:
41 Moby Thesaurus words for "leaflet": advert, advertisement, bill, blade, booklet, bract, bracteole, bractlet, brochure, chapbook, circular, comic book, cotyledon, flag, flier, floral leaf, flyer, folder, foliole, frond, glume, handbill, involucre, involucrum, lamina, leaf, lemma, ligule, needle, pamphlet, petal, pile, pine needle, seed leaf, sepal, spathe, spear, spire, stipula, stipule, tract
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