Strong’s Greek
G4728 — stenos
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
στενός
stenos — pronounced sten-os'
probably from the base of 2476; narrow (from obstacles standing close about):--strait. see GREEK for 2476
3 occurrences in the KJV.
Matthew 7:13
Enter 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 7:14
Because strait is the gate, and narrow is the way, which leadeth unto life, and few there be that find it.
Luke 13:24
Strive to enter in at the strait gate: for many, I say unto you, will seek to enter in, and shall not be able.