stop (redirected from stop knob)

stop: see punctuation.

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stop

1. a plug or stopper

2. a block, screw, or other device or object that prevents, limits, or terminates the motion of a mechanism or moving part

3. Fencing a counterthrust made without a parry in the hope that one's blade will touch before one's opponent's blade

4. Music

a. the act of stopping the string, finger hole, etc., of an instrument

b. a set of organ pipes or harpsichord strings that may be allowed to sound as a group by muffling or silencing all other such sets

c. a knob, lever, or handle on an organ, etc., that is operated to allow sets of pipes to sound

d. an analogous device on a harpsichord or other instrument with variable registers, such as an electrophonic instrument

5. the angle between the forehead and muzzle of a dog or cat, regarded as a point in breeding

6. Nautical a short length of line or small stuff used as a tie, esp for a furled sail

7. Photog

a. a setting of the aperture of a camera lens, calibrated to the corresponding f-number

b. another name for diaphragm

8. a block or carving used to complete the end of a moulding

9. Bridge a protecting card or winner in a suit in which one's opponents are strong

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stop [stäp]

(control systems)

A bound or final position of a robot's movement.

(optics)

The aperture or useful opening of a lens, usually adjustable by means of a diaphragm.