candlestick is a device used to hold a candle in place. Candlesticks have a cup or a spike ("pricket") or both to keep the candle in place. Candlesticks are less frequently called "candleholders".
Before the proliferation of electricity, candles were carried between rooms using a chamberstick, a short candlestick with a pan to catch dripping wax.
Although electric lighting has phased out candles in much of the world, candlesticks and candelabras are still used in homes as decorative elements or to add atmosphere on special occasions.