Definition of boiler

• n. - One who boils.
• n. - A vessel in which any thing is boiled.
• n. - A strong metallic vessel, usually of wrought iron plates riveted together, or a composite structure variously formed, in which steam is generated for driving engines, or for heating, cooking, or other purposes.
• n. - One who boils.
• n. - A vessel in which any thing is boiled.
• n. - A strong metallic vessel, usually of wrought iron plates riveted together, or a composite structure variously formed, in which steam is generated for driving engines, or for heating, cooking, or other purposes.