Definition of "leaf" in English

noun

1. The usually green and flat organ that represents the most prominent feature of most vegetative plants.

2. (botany) A foliage leaf or any of the many and often considerably different structures it can specialise into.

3. Anything resembling the leaf of a plant.

4. (publishing, bookbinding, advertising) A sheet of a book, magazine, etc. (consisting of two pages, one on each face of the leaf).

5. A sheet of any substance beaten or rolled until very thin.

   • gold leaf

6. One of the individual flat or curved strips of metal, typically made of spring steel, that make up a leaf spring.

7. (in the plural) Tea leaves.

8. A flat section used to extend the size of a table.

9. (plural leaves or leafs) A moveable panel, e.g. of a bridge or door, originally one that hinged but now also applied to other forms of movement.

   • The train car has one single-leaf and two double-leaf doors per side.

10. (computing, mathematics) In a tree, a node that has no descendants.

11. The layer of fat supporting the kidneys of a pig, leaf fat.

12. One of the teeth of a pinion, especially when small.

13. (slang, uncountable) Cannabis.

14. (4chan slang, Internet slang, humorous, sometimes pejorative, plural leafs) A Canadian person.

15. (programming, x86) A particular value of the EAX register when a program runs the CPUID instruction; each leaf represents a different category of information returned about the processor.

verb

1. (intransitive) To produce leaves; put forth foliage.

2. (transitive) To divide (a vegetable) into separate leaves.

   • The lettuce in our burgers is 100% hand-leafed.

3. (informal, transitive, uncommon) To play a prank on someone by throwing a large clump or collection of leaves at them.