a homogeneous mixture of two or more substances; frequently (but not necessarily) a liquid solution

obtain from a substance, as by mechanical action

an extract of beef (given to people who are ill)

extract of the heartwood of Acacia catechu used for dyeing and tanning and preserving fishnets and sails; formerly used medicinally

extract from the pancreas of animals that contains pancreatic enzymes; used to treat pancreatitis and other conditions involving insufficient pancreatic secretions

the essence or liquor that results from the extraction of the water-soluble substances of a drug or medicinal plants by boiling them.

an extract derived from the leaves of Uncaria gambir, a climbing shrub native to tropical Southeast Asia; also known as pale catechu, white catechu or Japan Earth, it is often confused with other forms of catechu.