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leap year a year in the Gregorian calendar having 366 days which occurs every four years, the extra day, February 29, making up the quarter day difference between the common year and the astronomical year. [2 definitions]
learn to gain knowledge of through study, experience, or research. [5 definitions]
learnable combined form of learn.
learned well-educated; knowledgeable; scholarly. [3 definitions]
learner's permit A paper that you get from the state that gives you permission to learn to drive. You must have a learner's permit before you get a driver's license.
learning knowledge gained through systematic study. [2 definitions]
learning disability any of various conditions, thought to be associated with the nervous system, that cause difficulty in mastering a basic skill such as reading.
learnt a past tense and a past participle of learn.
learn the ropes (informal) to be or become acquainted with the techniques or procedures pertinent to a particular situation, organization, or the like.
lease a contract or agreement for the occupancy or use of one party's property by another for a specified period of time and in exchange for monetary or other compensation; rental agreement. [5 definitions]
leasehold the holding of a property by lease, or the property so held.
leash a length of leather, chain, rope, or the like, attached to the collar of an animal in order to lead it or keep it under control. [3 definitions]
least superlative of "little." [5 definitions]
least common denominator the smallest number that two or more fractions share as a common denominator; lowest common denominator.
least common multiple the smallest number into which each of two or more whole numbers is exactly divisible.
leastwise (informal) at any rate; at least; anyway.
leather the tanned or preserved skin of an animal, usu. with the hair or fur removed. [5 definitions]
leatherback the largest living sea turtle, characterized by its leathery upper shell, which can reach a length of over eight feet.
leatherneck (slang) a United States marine.
leatherwood a shrub, native to North America, having tough, flexible bark and bearing yellow flowers.
leathery similar to leather in appearance or texture; weathered.