crop 
(krŏp)
(krŏp)n.
1.
a. Cultivated plants or agricultural produce, such as grain, vegetables, or fruit, considered as a group: Wheat is a common crop.
b. The total yield of such produce in a particular season or place: an orchard that produced a huge crop of apples last year.
2. A group, quantity, or supply appearing at one time: a crop of new ideas.
3. A short haircut.
4. An earmark on an animal.
5.
a. A short whip used in horseback riding, with a loop serving as a lash.
b. The stock of a whip.
6. Zoology
a. A pouchlike enlargement of a bird's gullet in which food is partially digested or stored for regurgitation to nestlings.
b. A similar enlargement in the digestive tract of annelids and insects.
v. cropped, crop·ping, crops
v.tr.
1.
a. To cut or bite off the tops or ends of: crop a hedge; sheep cropping grass.
b. To cut (hair, for example) very short.
c. To clip (an animal's ears, for example).
d. To trim (a photograph or picture, for example).
2.
a. To harvest: crop salmon.
b. To cause to grow or yield a crop.
v.intr.
Phrasal Verb: 1. To feed on growing grasses and herbage.
2. To plant, grow, or yield a crop.
crop up
To appear unexpectedly or occasionally: "one of the many theories that keep cropping up in his story" (Christopher Lehmann-Haupt).
[Middle English, from Old English cropp, ear of grain.]