What is the meaning of trunk?

noun

• The main stem of a tree; usually covered with bark; the bole is usually the part that is commercially useful for lumber.
  • synonyms: tree trunk, bole
• Luggage consisting of a large strong case used when traveling or for storage.
• The body excluding the head and neck and limbs.
  • usage: "they moved their arms and legs and bodies"
  • synonyms: torso, body
• Compartment in an automobile that carries luggage or shopping or tools.
  • usage: "he put his golf bag in the trunk"
  • synonyms: luggage compartment, automobile trunk
• A long flexible snout as of an elephant.
  • synonyms: proboscis