עָרַב
`arab (aw-rab') v.
1. to braid, i.e. intermix
2. technically, to traffic (as if by barter)
3. also or give to be security (as a kind of exchange)
[a primitive root]
KJV: engage, (inter-)meddle (with), mingle (self), mortgage, occupy, give pledges, be(-come, put in) surety, undertake.