Cloning is a type of genetic engineering that uses cells from one organism to create a second living organism that is genetically identical to the first.
When the poet stumbled over a line in the middle of a poem, someone in the audience corrected him. Running along the beach, she stumbled on a log and fell on the sand.
I can't wear wool - it makes me itch. She won't wear that beautiful woollen jumper; she complains that it itches. Why are you wrinkling your nose like that? Is it itching?