noun

1. an upright bar, beam, or post used as a support
2. ☆ a restraining device fitted loosely around the neck of a cow to confine it to its stall

Etymology: ME stanchon < OFr estanson, estanchon < estance: see stance

transitive verb

1. to provide or support with stanchions
2. ☆ to confine (a cow) with a stanchion