pipestem

noun

1. The hollow stem or tube of a pipe used for smoking tobacco, etc.
2. The pale bridewort (Spiraea alba).
3. A driveway that leads to multiple residences, often maintained or owned jointly by the residents along the driveway; a shared driveway.

   “The families live at the end of what's called a "pipestem" driveway, a narrow private avenue that connects their properties to Compton Road near Clifton. Without the driveway, three of the four lots would be completely landlocked, with no way to get to the main road.”

   “Although Washburn defined the house location as a cul-de-sac rather than a pipestem, it was a shared driveway off a main road with all the mailboxes grouped together at the entrance to the main road.”