Bowl for baptismal water (4)
I believe the answer is:
font
'bowl for baptismal water' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for font that I've seen before include "Baptismal receptacle" , "Style of lettering" , "Gothic" , "Baptismal tank" , "Size and style of type" .)