Meaning : Piece of leather or synthetic material that forms the part of a shoe or boot above the sole that encases the foot.
Example :
Uppers come in many styles.
Meaning : A central nervous system stimulant that increases energy and decreases appetite. Used to treat narcolepsy and some forms of depression.
Synonyms : amphetamine, pep pill, speed
Meaning : The topmost one of two.
Meaning : Higher in place or position.
Example :
The upper bunk.
In the upper center of the picture.
The upper stories.
Meaning : Superior in rank or accomplishment.
Example :
The upper half of the class.