jaguar n. a type of large, yellow-colored cat with black markings found in the southwestern region of the US. and in Central and South America.
jargon 1. n. speech that doesn’t make sense. 2. n. an unknown language that seems strange or impossible to understand. 3. n. a language made up of two or more other languages: His jargon was a mixture of French and English. 4. n. the special vocabulary of a field or profession: Her report on computers was field with jargon.
jaunt 1. n. a trip taken for fun  2. v. to go on a brief pleasant trip: We jaunted to the country last Saturday .
javelin 1. n. a spear most commonly used as a weapon or in hunting  2. n. a light-weight metal or wooden spear that is thrown in track-and-field contests. 3. n. the contest in which a javelin is thrown. 4. v.  to strike, as with a javelin
jazz 1. n. a type of music that originated in New Orleans and is characterized by rhythmic beats. 2. n. popular dance music influenced by jazz. 3. n. slang empty talk. 4. adj. of or like jazz:  a jazz band, a jazz records
jennet  n. a small Spanish horse 
Which meaning of the word javelin is used in the sentence below?
At the competition, Jack drew his arm back and threw the javelin 50 yards.

A．Definition 1

B．Definition 2

C．Definition 3

D．Definition 4

Which meaning of the word jargon is used in the sentence below?
Doctors often speak in medical jargon.

A．Definition 1

B．definition 2

C．Definition 3

D．Definition 4

What does the word jazz mean in the following sentence? 
Don’t give me that jazz, for I am a practical person.

A．rhythmic beats	B．a type of music
C．meaningless talk	D．a kind of dance