roller, chimney, live vest, toothpaste

• roll‧er [countable]
• 1 a piece of equipment consisting of a tube-shaped piece of wood, metal etc that rolls over and over, used for painting, crushing, making things smoother etc:
• a paint roller
• a garden roller
• ➔ steamroller1 (1)
• 2 [usually plural] a tube-shaped piece of metal or wood, used for moving heavy things that have no wheels:
• The boats are taken down to the sea on rollers.
• 3 a small plastic or metal tube used for making hair curl [= curler]
• 4 a long powerful wave:
• great Atlantic rollers

• chim‧ney [countable]
• 1 a vertical pipe that allows smoke from a fire to pass out of a building up into the air, or the part of this pipe that is above the roof:
• We can't light a fire because the chimney hasn't been swept.
• 2 a tall vertical structure containing a chimney [↪ smokestack]:
• a factory chimney
• 3 technical a narrow opening in tall rocks or cliffs that you can climb up
• 4

  smoke like a chimney

   if someone smokes like a chimney, they smoke a lot of cigarettes or tobacco - used humorously

life vest [countable]

American English a life jacket

• tooth‧paste [uncountable]
• a thick substance that you use to clean your teeth

Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.