fireplug

[fahyuh r-pluhg] /ˈfaɪərˌplʌg/
noun
1.
fire hydrant.
Origin
1705-15; fire + plug
British Dictionary definitions for fireplug

fireplug

/ˈfaɪəˌplʌɡ/
noun
1.
another name (esp US and NZ) for fire hydrant
Word Origin and History for fireplug
n.

1713, from fire (n.) + plug (n.).