a base or stand: the fixed support an object is set on to hold it in place
This word names the fixed support that something rests on, a base or stand. It comes from a root meaning to set firmly in place. In almost every appearance it is a specific piece of temple furniture: one of the ten portable bronze stands King Solomon had built to hold the large water basins the priests used for washing.
These were not simple pedestals. Each was an ornate wheeled cart of cast bronze, its side panels decorated with lions, oxen, and angel-like figures, with a round collar on top that cradled the basin. The books of Kings and Jeremiah trace their whole story, from Solomon's craftsmen casting them to the day Babylon's army broke them up and carried the bronze away.
The word turns up once more, long afterward, when the returning exiles set the rebuilt altar back on its base. There it means the altar's proper footing, the settled place where it belongs, rather than a wheeled stand.
A simpler, more general word for a base or pedestal is כֵּן, and a closely related term מָכוֹן names a fixed dwelling or resting place rather than a physical stand.