Lem

n. A genus of tropical American cacti, usually tall and branching with stout spines and funnel-shaped flowers and globular or ovoid often edible fruit.
Syn. -- genus Lemaireocereus. [ WordNet 1.5 ]

n. [ OE. lemman, lefman; AS. leóf dear + mann man. See Lief, and Man. ] A sweetheart, of either sex; a gallant, or a mistress; -- usually in a bad sense. [ Archaic ] Chaucer. Spenser. Shak. [ 1913 Webster ]

n. A fruit tree (Citrus limonia) which is a hybrid between the mandarin orange and the lemon, having a very acid fruit with an orange peel; also, the fruit of this tree, the rangpur.
Syn. -- rangpur, rangpur lime, Citrus limonia. [ WordNet 1.5 +PJC ]

v. i. To shine. [ Obs. ] Piers Plowman. [ 1913 Webster ]

n. [ OE. leem, leme, leam, AS. leóma light, brightness; akin to E. light, n. √122. ] A ray or glimmer of light; a gleam. [ Obs. ] Chaucer. [ 1913 Webster ]

n.; pl. L. Lemmata E. Lemmas [ L. lemma, Gr. lh^mma anything received, an assumption or premise taken for granted, fr. lamba`nein to take, assume. Cf. Syllable. ] 1. (Math., Logic) A preliminary or auxiliary proposition demonstrated or accepted for immediate use in the demonstration of some other proposition, as in mathematics or logic. [ 1913 Webster ]

2. A word that is included in a glossary or list of headwords; a headword. [ PJC ]

n. A leman. [ Obs. ] Chaucer. [ 1913 Webster ]

v. t. The act or process of lemmatizing; conversion into a lemma{ 2 }. [ PJC ]

☞ Lemmatization of search words in a computerized Information Retrieval System may allow more effective retrieval of documents of interest to the searcher. [ PJC ]