A bobèche is an American or French term
for an annular device used for catching wax, or for an ornamental element
taking the same form. On a
candlestick
A 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 sometimes called "candleholders".
Before the proliferation of electricity, candles wer ...
, the part can take the form of a dish-like ring, while in a chandelier it may be shaped like a bowl. They can be made of glass or brass or paper as well. Bobèches are often removable to allow for cleaning.
References
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Candles