By contrast, exercising requires you to commit your willpower for only a short, well-defined period of time.
Such a stream begins in the hills with a well-defined boulder-strewn bed, which is never dry.
Here was a dilemma—a dilemma none the less for having two well-defined horns.
His first crime may present many features to indicate that he is more the victim of circumstances than well-defined ill-will.
He had a well-defined code to regulate his relations with others and theirs with him.
History, like an individual's life, is a succession of well-defined periods.
But the electors of Germany, in days agone, had a well-defined use.
It is a step—not long, yet well-defined—from thought to idea.
In the first place, let us determine upon some well-defined plan.
They are more or less heavily marked with well-defined spots and dots of pale chocolate and reddish brown.