A still is an apparatus used to distill liquid mixtures by heating to selectively boil and then cooling to condense the vapor. A still uses the same concepts as a basic distillation apparatus, but on a much larger scale. Stills have been used to produce perfume and medicine, Water for Injection (WFI) for pharmaceutical use, generally to separate and purify different chemicals, and to produce distilled beverages containing Ethanol.

Benjamin Stillingfleet (1702–1771) was a botanist, translator and author. He is said to be the first Blue Stocking, a phrase from which is derived the term now used to describe a learned woman.