vehicle

Noun

• any inanimate object (as a towel or money or clothing or dishes or books or toys etc.) that can transmit infectious agents from one person to another

• any substance that facilitates the use of a drug or pigment or other material that is mixed with it

• a medium for the expression or achievement of something
  • his editorials provided a vehicle for his political views
    
  • a congregation is a vehicle of group identity
    
  • the play was just a vehicle to display her talents
    

• a conveyance that transports people or objects