στενός G4728
stenós · sten-os' · Adjective
probably from the base of ἵστημι; narrow (from obstacles standing close about):--strait.
3 Occurrences in the King James Bible
Matthew 7:13Enter ye in at the strait gate: for wide is the gate, and broad is the way, that leadeth to destruction, and many there be which go in thereat:
Matthew 7:14Because strait is the gate, and narrow is the way, which leadeth unto life, and few there be that find it.
Luke 13:24Strive to enter in at the strait gate: for many, I say unto you, will seek to enter in, and shall not be able.