For the purpose of this subchapter the following definition shall apply unless the context clearly indicates or requires a different meaning.
ADVERTISER. Any person, firm, or corporation engaged in the business of placing, posting, or painting advertisements, notices, or displays in or on any place for the purpose of outdoor advertisement so that the resultant display is visible from any street, alley, sidewalk, or other public place.
('70 Code, § 2.2.21)