In this title the following words have the meanings indicated. “Mutual holding company” means the corporation which holds more than 50% of the stock of a subsidiary savings bank pursuant to a reorganization under Subtitle 8 of this title. “Savings bank” means an institution that: Is incorporated under the laws of this State as a savings bank; and Engages only in the business of savings banking. The term “savings bank” includes a subsidiary savings bank for the purpose of applying the provisions of this article. “Subsidiary savings bank” means an institution that: Is incorporated under the laws of this State as a subsidiary savings bank, all of the stock of which is owned by a mutual holding company; Engages only in the business of savings banking; Is a member of the Federal Deposit Insurance Corporation; and Is organized to receive assets and liabilities of a mutual holding company in accordance with this subtitle and Subtitle 9 of this title.