The nearly impossible puzzle your math teacher gives for extra credit can be called a teaser a tricky problem to solve.
One who teases or vexes.
Noun
a device for teasing wool; "a teaser is used to disentangle the fibers"
Noun
a flat at each side of the stage to prevent the audience from seeing into the wings
Noun
an attention-getting opening presented at the start of a television show
Noun
a particularly baffling problem that is said to have a correct solution; "he loved to solve chessmate puzzles"; "that''s a real puzzler"
Noun
an advertisement that offers something free in order to arouse customers'' interest
Noun
someone given to teasing (as by mocking or stirring curiosity)
Noun
a worker who teases wool
n.
One who teases or vexes.
n.
A jager gull.
Teaser
One who teases or vexes.
Usage Examples
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