(n.) a large bird of prey with a hooked bill and long broad wings, known for its keen eyesight and soaring flight

(n.) a burrowing invertebrate that lives in the soil and is used often as bait by fishermen

(n.) the theory or practice of teaching at a school or university

(n.) an oval or round object laid by a female bird, reptile, fish, or invertebrate

(n.) the number after seventeen and before nineteen

(n.) the joint between the upper arm and the forearm

(n.) a form of energy resulting from charged particles accumulating statically or moving dynamically in a current

(n.) a heavy plant-eating mammal with a prehensile trunk, long curved ivory tusks, and large ears, native to Africa and southern Asia

(n.) an unborn or unhatched offspring in the process of development

(n.) a bright green precious stone

(n.) a feeling or sentiment, such as joy, sorrow or fear

(adj.) unfilled, unoccupied or containing nothing

(n.) the expression of approval and support

(n.) a book or set of books giving information on many subjects or on many aspects of one subject and typically arranged alphabetically

(n.) a foe or adversary who actively opposes someone or something

(n.) a flat paper container with a sealable flap, used to enclose a letter or document

(n.) a long and distinct period of history

(v.) to break free from confinement or control

(adj.) absolutely necessary and extremely important

(adj.) lasting forever, without end or beginning

(n.) the day before a holiday, festival, or any significant date

(n.) a thing that happens, usually a planned public or social occasion

(adj.) morally bad or wrong

(v.) to travel through an unfamiliar country or area, perhaps in order to learn more about it

(n.) one of a pair of round organs in the head which people and many animals use to see