Strong's #3161: yachad (pronounced yaw-khad')

a primitive root; to be (or become) one:--join, unite.

Brown-Driver-Briggs Hebrew Lexicon:

yâchad

1) to join, unite, be joined, be united

1a) (Qal) to be united

1b) (Piel) to unite

Part of Speech: verb

Relation: a primitive root

Usage:

This word is used 3 times:

 

Genesis 49:6: "unto their assembly, mine honor, be not thou united: for in their anger they slew a man,"
Psalms 86:11: "O LORD; I will walk in thy truth: unite my heart thy name."
Isaiah 14:20: "Thou shalt not be joined with them in burial, because thou hast destroyed thy land,"