Definition
A tenterhook is a sharp hook used to fasten cloth to a tenter, a frame for stretching fabric. It's mostly known now in the idiom 'on tenterhooks,' meaning in a state of suspense or anxiety. Imagine being hooked onto something, stretched and waiting. The phrase captures the feeling of being tightly strung and uncertain. While the physical hooks are less common now, the expression remains vivid and widely used. It emphasizes the emotional strain of waiting for something important.