In construing the provisions of this chapter, save when otherwise plainly declared or clearly apparent from the contents, the following definitions shall be applied:
means a blast of whistles and sirens for a continuous period of three minutes, or such other signal as may subsequently be designated by federal authority.
means a series of three blasts of whistles and sirens for a continuous period of one minute each, or such other signal as may subsequently be designated by federal authority.
(Ord. 95 § 1, 1942)