Found 1 items, similar to three-port.
English → English (gcide) Definition: Three-port Three-port \Three"-port`\, a. Having three ports; specif.: Designating a type of two-cycle internal-combustion engine in which the mixture enters the crank case through a port uncovered by the piston near the end of its stroke. [Webster 1913 Suppl.] [1913 Webster]