stanchion

noun

1. A vertical pole, post, or support.

   “The train began to move. Lace walked with it, holding a stanchion.”

   “You cross under the rusting stanchions of the old elevated highway and walk out to the pier.”

   “Hiro climbs on his bike, eases it through the neighbourhood and onto the Street, and then gosses it up to a few hundred miles an hour, slaloming between the stanchions of the monorail, praticing.”

   “He staggers against a stanchion, trips over a rope, and tumbles into the space between the quay and the steel plates of the freighter.”

2. A framework of such posts, used to secure or confine cattle.

verb

1. To erect stanchions, or equip something with stanchions.
2. To confine by means of stanchions, typically used for cattle.