Strongs: H8027
H8027 @ שׁלשׁ shâlash shaw-lash' A primitive root perhaps originally to {intensify} that {is} treble; but apparently used only as denominative from {H7969} to be (causatively make) triplicate (by {restoration} in {portions} {strands} days or years): - do the third {time} (divide {into} stay) three ({days} {-fold} {parts} years old).
Genesis:15:9
Deuteronomy:19:3
1Samuel:20:19
1Kings:18:34
Ecclesiastes:4:12
Ezekiel:42:6