In this Part -
"security" includes a mortgage (whether legal or equitable), charge, debenture, bill of exchange, promissory note, guarantee, lien, pledge or other means of securing the payment of a debt whether present or future, or the discharge of an obligation or liability whether actual or contingent;
"the amalgamation day" has the meaning assigned to it by section 47;
"the banks" and "the amalgamated bank" have the meanings assigned to them by section 48.