crosspipe

From cross +‎ pipe.

crosspipe (plural crosspipes)

1. A cross-shaped segment used to connect the ends of four pipes.
   • 2007 June 24, Michael Pollak, “Graffiti Secrets”, in New York Times‎^[1]:

     The English sparrow, another abundant city species, also loves streetlights and lampposts, especially those with crosspipes open at the ends.