“Bellows” can mean a few related things, depending on context.

Core meanings

  1. Mechanical device (main meaning)
    • A device that blows air by expanding and contracting, used to make a fire burn hotter or to supply air to instruments like some organs or accordions.
 * Classic example: the hand bellows you pump to get a fireplace or forge fire going.
  1. Loud shout (as “bellow”, related word)
    • “To bellow” means to shout very loudly and deeply , like a bull or someone yelling angrily.
 * You’ll see phrases like “the sergeant bellowed orders” or “his bellow filled the hallway.”
  1. Special technical uses
    • In cameras, “bellows” can mean the pleated, expandable part between the lens and body on some old or large-format cameras.
 * In engineering, it can mean a **flexible, accordion-like tube or container** that expands and contracts, often metal or plastic, to absorb movement or pressure.

Quick usage guide

  • Talking about a fireplace, forge, organ, accordion, or air blower → it’s the air-pumping device.
  • Talking about someone’s voice (“he let out great bellows of laughter”) → it’s a very loud, deep sound or shout (from the base verb “to bellow”).
  • Talking about cameras or flexible joints in machines or pipes → it’s the expandable, folded part that can stretch and compress.

Handy memory trick: think of “bellows” as anything that puffs air or puffs in and out —a fire tool, a camera’s folding middle, or even lungs in metaphor.

Information gathered from public forums or data available on the internet and portrayed here.