passing
adjective(pass-ing)
lasting a very short time
Examples:
A passing fancy. 
passing
adjective(pass-ing)
hasty and without attention to detail; not thorough
Examples:
A passing glance. 
passing
noun(pass-ing)
a bodily reaction of changing from one place or stage to another
Examples:
The passing of flatus. 
passing
noun(pass-ing)
success in satisfying a test or requirement
Examples:
His future depended on his passing that test. 
passing
noun(pass-ing)
going by something that is moving in order to get in front of it
Examples:
She drove but well but her reckless passing of every car on the road frightened me. 
passing
adjective(pass-ing)
of advancing the ball by throwing it
Examples:
A team with a good passing attack. 
passing
adverb(pass-ing)
to an extraordinary degree
Examples:
She was a surpassingly beautiful woman. 
I will mention only one particular aspect of the current mess because ... this one is surely something new and passing strange. 
passing
noun(pass-ing)
euphemistic expressions for death
Examples:
Thousands mourned his passing. 
passing
noun(pass-ing)
the motion of one object relative to another
Examples:
Stellar passings can perturb the orbits of comets. 
passing
noun(pass-ing)
(American football) a play that involves one player throwing the ball to a teammate
Synonyms: pass, passing game, passing play, 
 Examples:
The coach sent in a passing play on third and long. 
passing
adjective(pass-ing)
allowing you to pass (e.g., an examination or inspection) satisfactorily
Examples:
A passing grade. 
passing
noun(pass-ing)
the end of something
Examples:
The passing of winter.