Definitions of aerial:

• noun:   a pass to a receiver downfield from the passer
• noun:   an electrical device that sends or receives radio or television signals
• adjective:   growing in air

  Example: "Aerial roots of a philodendron"

• adjective:   in or belonging to the air or operating (for or by means of aircraft or elevated cables) in the air

  Example: "Aerial particles"

• adjective:   characterized by lightness and insubstantiality; as impalpable or intangible as air

  Example: "Aerial fancies"