lemon

n. oval fruit of the lemon tree having a yellow rind and juicy sour pulp; small subtropical citrus tree with thorny branches; bright yellow color; defective or unsatisfactory person or thing (Informal)

adj. made from lemons; that tastes like lemons, having the scent of a lemon; of lemon color, of pale yellow color

This article is about the fruit. For other uses, see Lemon (disambiguation) The lemon (Citrus × limon) is a hybrid in cultivated wild plants. It is the common name for the reproductive tissue surrounding the seed of the angiosperm lemon tree. The lemon is used for culinary and non culinary uses throughout the world.The fruit is used primarily for its juice, though the pulp and rind (zest) are also used, primarily in cooking and baking. Lemon juice is about 5% acid, which gives lemons a tart taste, and a pH of 2 to 3. This makes lemon juice an inexpensive, readily available acid for use in educational science experiments.
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Noun
1. yellow oval fruit with juicy acidic flesh
(hypernym) citrus, citrus fruit, citrous fruit
(part-holonym) lemon tree, Citrus limon
(part-meronym) lemon peel, lemon rind
2. a strong yellow color
(synonym) gamboge, lemon yellow, maize
(hypernym) yellow, yellowness
3. a small evergreen tree that originated in Asia but is widely cultivated for its fruit
(synonym) lemon tree, Citrus limon
(hypernym) citrus, citrus tree
(hyponym) sweet lemon, sweet lime, Citrus limetta
(member-holonym) genus Citrus
4. a distinctive tart flavor characteristic of lemons
(hypernym) relish, flavor, flavour, sapidity, savor, savour, smack, tang
5. an artifact (especially an automobile) that is defective or unsatisfactory
(synonym) stinker
(hypernym) artifact, artefact
(classification) colloquialism

(n.)
The tree which bears lemons; the lemon tree.
  

(n.)
An oval or roundish fruit resembling the orange, and containing a pulp usually intensely acid. It is produced by a tropical tree of the genus Citrus, the common fruit known in commerce being that of the species C. Limonum or C. Medica (var. Limonum). There are many varieties of the fruit, some of which are sweet.
  

An investment with poor results.