the edible nutritious seed of various plants of the legume family, esp. of the genus Phaseolus.
2.
a plant producing such seeds.
3.
the pod of such a plant, esp. when immature and eaten as a vegetable.
4.
any of various other beanlike seeds or plants, as the coffee bean.
5.
Slang.
a.
a person's head.
b.
a coin or a bank note considered as a coin: I can't pay for the ticket, I don't have a bean in my jeans.
6.
BritishInformal. a minimum amount of money: They've been disinherited and now haven't a bean.
7.
beans, Informal. the slightest amount: He doesn't know beans about navigation.
–verb (used with object)
8.
Slang. to hit on the head, esp. with a baseball.
–interjection
9.
beans, (used to express disbelief, annoyance, etc.).
—Idioms
10.
full of beans, Informal.
a.
energetic; vigorously active; vital: He is still full of beans at 95.
b.
stupid; erroneous; misinformed.
11.
spill the beans, Informal. to disclose a secret, either accidentally or imprudently, thereby ruining a surprise or plan: He spilled the beans, and she knew all about the party in advance.
Origin: bef. 950; ME bene, OE bēan; c. ON baun, OFris bāne, D boon, OS, OHG bona (G Bohne), prob. < Gmc *babnō, c. Russ bob, L faba < European IE *bhabh-
Any of various New World twining herbs of the genus Phaseolus in the pea family, having leaves with three leaflets, variously colored flowers, and edible pods and seeds.
A seed or pod of any of these plants.
Any of several related plants or their seeds or pods, such as the adzuki bean, broad bean, or soybean.
Any of various other plants or their seeds or fruits, especially those suggestive of beans, such as the coffee bean or the vanilla bean.
Slang A person's head.
beansSlang A small amount: I don't know beans about investing.
Chiefly British A fellow; a chap.
tr.v.
beaned, bean·ing, beansSlang To hit (another) on the head with a thrown object, especially a pitched baseball.
[Middle English ben, broad bean, from Old English bēan; see bha-bhā- in Indo-European roots.]
Bean (bēn) American frontiersman in Texas who in 1881 appointed himself justice of the peace and handed down judgments based on one law book and one six-shooter.
[been] 
