What is the meaning of elbow?

noun

• Hinge joint between the forearm and upper arm and the corresponding joint in the forelimb of a quadruped.
  • synonyms: elbow joint, human elbow, cubitus, cubital joint, articulatio cubiti
• A sharp bend in a road or river.
• A length of pipe with a sharp bend in it.
• The part of a sleeve that covers the elbow joint.
  • usage: "his coat had patches over the elbows"
• The joint of a mammal or bird that corresponds to the human elbow.

verb

• Push one's way with the elbows.
• Shove one's elbow into another person's ribs. .