1. A boiler that supplies central heating and/or hot water, fitted into a fireplace recess, normally behind a gas fire

Derived forms: back boilers

• conditioned reaction
• conditioned reflex
• snips
• snit
• snitch
• snitcher
• snivel
• sniveler
• sniveling
• sniveller
• snivelling
• Sno-cat
• snob
• snobbery
• snobbish
• snobbishly
• snobbishness
• snobbism
• snobby
• snod
• snoek
• snog
• snogging
• snood
• snook