lamppost

noun2

1. •
   The pole that holds up a light so it can illuminate a wide area, such as holds up a streetlight.

   • Visit the Jurassic Coast World Heritage Site in the UK, and ammonite road signs greet you at every town and city and even the lampposts on the seafront feature a familiar coiled shell. — 2017
2. •
   (informal, humorous) A tall, thin person.

   • You big skinny lamppost. And you're going grey! — 1985