Essential oils can become more powerful therapeutically when blended correctly These blends are known as synergies. A synergy is a mix or blend of essential oils all similar in therapeutic properties and chemical families.
Definition of nightingale for English Language Learners. : a small brown European bird that sings a beautiful song especially at night.
Quick Answer. In general, birds symbolize the presence of a higher being with a connection to the sky, ultimately freeing themselves from the restraints of gravity. Birds represent a human's power and ability to escape gravity and achieve success through the efforts of climbing higher and taking off into flight.