noun

• (agriculture) A plant, grown for it, or its fruits or seeds, to be harvested as food, livestock fodder, or fuel or for any other economic purpose.
  "The farmer had to decide which crop to grow as his main bet for the coming year. Would it be barley, oats, or something else?"
• (figurative) A group, cluster, or collection of things occurring at the same time.
  "The decade produced a whole crop of ideas about space travel."
• (anatomy) A pouch-like part of the alimentary tract of some birds (and some other animals), used to store food before digestion or for regurgitation.
  "A little bird sat on the edge of her nest; Her yellow-beaks slept as sound as tops; That day she had done her very best, And had filled every one of their little crops."
• (architecture) The foliate part of a finial.

verb

• (transitive) To remove the top end of something, especially a plant.
  "I will crop off from the top of his young twigs a tender one."
• (transitive) To mow, reap or gather.
• (transitive) To cut (especially hair or an animal's tail or ears) short.
• (transitive) To remove the outer parts of a photograph or other image, typically in order to frame the subject better.
  "Reduce to six inches wide and crop to eight inches high."