Bobby Unser's primary argument was based on what he considered to be a vague definition of the "blend rule."

Wow, that title sounds like a new record in vague definition for a patent.

"By using a broad and vague definition of terrorism, that has a chilling effect on free speech."

This is, however, a very vague definition, as it includes persons from all but the lowest quintile.

That catchy but vague definition of what it takes to make a breakthrough is as good as any today.

Dissociation theory is criticized for its vague and inconsistent definition.

A vague definition of what was considered to be a threat and who was the mutual enemy.

We cannot confine ourselves to vague definitions, particularly as regards the definition of market manipulation.

Is it, for example, willing to tighten up the vague definition of 'good agricultural practices'?

The major problem, most dealers say, is vague definitions of obscenity.