§ 21-1  DEFINITIONS.
   For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
   IMPROVED STREET.  Any street having a wearing surface of concrete, asphalt, brick, stone block, tar treatment or similar hard material.
   LATERAL.  A pipe connecting a sanitary sewer or water main with the line of adjacent property or extending from the main to the inside of the curb.
   MACADAM STREET.  Any street with crushed stone surface, either water, asphalt or tar bound.
   SEWER.  A sanitary sewer.
   UNIMPROVED STREET.  Any street having a dirt surface.
(`86 Code, § 21-1)