n. A post, pillar, or beam used for a support, as a piece of timber supporting one of the main parts of a roof; a prop.n. One of the upright bars in a stall for cattle.n. In ship-building, an upright post or beam of different forms, used to support the deck, the rails, the nettings, awnings, etc.n. plural In milit. engin., one of the upright side-pieces of a gallery-frame.To fasten to or by a stanchion.