line, rule

Strong’s Dictionary of Greek Words:

Greek:
κανών
Transliteration:
kanon
Phonic:
kan-ohn’
Meaning:
from κάνη (a straight reed, i.e. rod); a rule ("canon"), i.e. (figuratively) a standard (of faith and practice); by implication, a boundary, i.e. (figuratively) a sphere (of activity)
KJV Usage:
line, rule