Terminology
In the early 16th century, the term "arquebus" had a confusing variety of meanings. Some writers used it to denote any matchlock shoulder gun, referring to light versions as caliver and heavier pieces fired from a fork rest as musket. Others treated the arquebus and caliver synonymously, both referring to the lighter, forkless shoulder-fired matchlock. As the 16th century progressed, the term arquebus came to be clearly reserved for the lighter forkless weapon. When the wheel lock was introduced, wheel-lock shoulder arms came to be called arquebuses, while lighter, forkless matchlock and flintlock shoulder weapons continued to be called calivers. In the mid-17th century, the light flintlock versions came to be called fusils or fuzees.
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