will-o'-the-wisp

(religious, Christianity) Ardent devotion or enthusiasm for God or Christian ideals; Christian fervour

plural of fire plant

A type of poinsettia (Poinsettia heterophylla) / The plant rosebay willowherb often found on disturbed soil, bomb sites etc.

plural of fire-bote

Alternative form of firebote

Synonym of buldak (“Korean spicy chicken dish”)

(dated) To catch fire; to begin to burn. / (figuratively) To become excited or enthused about something.

(Buddhism) Three Poisons; three primary causes of unskillful action that lead to the creation of "negative" karma

Of a boiler or heating system: burning oil as a fuel to provide heat.