As used in this subchapter, the following words and phrases shall have the following meanings, unless a different meaning is plainly required by the context:
1. "Variable supplements fund". The firefighters' variable supplements fund established by this subchapter.
1-a. "Minimum period". The minimum period of credited service which a member of pension fund subchapter one or pension fund subchapter two is required by law to perform in order to be eligible to retire for service with immediate payability of retirement allowance.
1-b. "Firefighter". A member of either pension fund referred to in subdivision one-a of this section who, at the time of retirement for service by reason of fulfillment of the minimum period, was a firefighter and was not a fire officer as defined in subdivision five of section 13-392 of subchapter six of this chapter.
2. "Association". The uniformed firefighters' association of greater New York.
3. "Fiscal year". Any year commencing with the first day of July and ending with the thirtieth day of June next following.
4. "Board". The board of trustees provided for in section 13-384 of this subchapter.
5. "Pension fund beneficiary".
(a) Subject to the provisions of paragraph (b) of this subdivision and except as provided in subdivision e of section 13-385 of this subchapter, any person who receives a retirement allowance by reason of having retired, on or after October first, nineteen hundred sixty-eight, for service (with credit for twenty or more years of service creditable toward the minimum period) as a member of pension fund subchapter one or subchapter two and as a firefighter or fire marshal (uniformed).
(b) With respect to benefits payable under this subchapter for calendar years succeeding December thirty-first, nineteen hundred ninety-two, the term "pension fund beneficiary" (subject to the provisions of paragraph thirteen of subdivision a of section 13-385 of this subchapter) shall include each person who receives a retirement allowance by reason of having retired, on or after October first, nineteen hundred sixty-eight, for service (with credit for twenty or more years of service creditable toward the minimum period) as a member of pension fund subchapter one or pensions fund subchapter two and as a wiper (uniformed).
6. "Variable supplement". Any sum authorized to be paid to a pension fund beneficiary pursuant to the provisions of this subchapter.
7. "Pension fund subchapter two". The New York fire department pension fund subchapter two maintained pursuant to subchapter two of chapter three of this title.
8. "Pension fund subchapter one". The New York fire department pension fund maintained pursuant to subchapter one of chapter three of this title.