Strong's #7405: rakac (pronounced raw-kas')
a primitive root; to tie:--bind.
Brown-Driver-Briggs Hebrew Lexicon:
râkas
1) (Qal) to bind
Part of Speech: verb
Relation: a primitive root
Usage:
This word is used 2 times:
Exodus 28:28: " And they shall bind the breastplate by the rings thereof unto the rings of the ephod"
Exodus 39:21: " And they did bind the breastplate by his rings unto the rings of the ephod"