(In a steam engine or internal-combustion engine) the surface of the block containing the ports through which steam or fuel enters and exhaust material leaves.
Origin
Late 19th century; earliest use found in The Century Dictionary.
Definition of port face in US English:
port face
noun
(In a steam engine or internal-combustion engine) the surface of the block containing the ports through which steam or fuel enters and exhaust material leaves.
Origin
Late 19th century; earliest use found in The Century Dictionary.