escrow

noun | \ ˈes-ˌkrō \ | es·crow
  1. : an instrument and especially a deed or money or property held by a third party to be turned over to the grantee and become effective only upon the fulfillment of some condition

  1. : a fund or deposit designed to serve as an escrow

escrow

transitive verb
  1. : to cause to be held as an escrow : place in escrow