essential oil

Từ điển WordNet v3.1 - WordNet Dictionary

noun

an oil having the odor or flavor of the plant from which it comes;
used in perfume and flavorings
• Syn:
volatile oil
• Hypernyms:
oil
• Hyponyms:
ilang-ilang, bitter almond oil, attar, atar, athar,
ottar, clove oil, oil of cloves, costus oil, eucalyptus oil, turpentine,
oil of turpentine, spirit of turpentine, turps, wormwood oil, absinthe oil, linalool