What is the meaning of stub?

noun

• A short piece remaining on a trunk or stem where a branch is lost.
• A small piece.
  • usage: "a nub of coal"; "a stub of a pencil"
  • synonyms: nub
• A torn part of a ticket returned to the holder as a receipt.
  • synonyms: ticket stub
• The part of a check that is retained as a record.
  • synonyms: check stub, counterfoil
• The small unused part of something (especially the end of a cigarette that is left after smoking.
  • synonyms: butt

verb

• Pull up (weeds) by their roots.
• Extinguish by crushing.
  • usage: "stub out your cigarette now"
• Clear of weeds by uprooting them.
  • usage: "stub a field"
• Strike (one's toe) accidentally against an object.
  • usage: "She stubbed her toe in the dark and now it's broken"