a receptacle, usually of stone, as in a baptistery or church, containing the water used in baptism.

a receptacle for holy water; stoup.

a productive source

The book is a font of useful tips for travelers.

the reservoir for oil in a lamp.

Archaic . a fountain.

noun

fount , fountain , genesis , origin , root , seed , wellspring , face , typeface , basin , receptacle , spring , stoup , type , well