TAUT

verb

1. To make taut; to tauten, to tighten.

adjective

1. Under tension, like a stretched bowstring, rope, or sail; tight.
2. (of a body, muscles, etc.) Not flabby; firm, toned; (of a person) having a lean, strong body.
3. (of music, writing, etc.) Containing only relevant parts; brief and controlled.