Section 15. (a) For the purposes of this section, ''emergency rental assistance'' shall, unless the context clearly requires otherwise, mean financial assistance provided to a residential tenant to prevent an eviction or homelessness under the residential assistance for families in transition program or any other program administered by the executive office of housing and livable communities, a municipality or a nonprofit entity administering such program, using public funds, on behalf of the executive office, a municipality or a federal agency to cure rent arrearage or provide financial assistance for moving cost assistance, including the payment of a security deposit.