To manipulate or adjust, to tweak. Derived from FROBNITZ.
Usually abbreviated to FROB. Thus one has the saying “to frob a
frob”. See TWEAK and TWIDDLE. Usage: FROB, TWIDDLE, and TWEAK
sometimes connote points along a continuum. FROB connotes aimless
manipulation; TWIDDLE connotes gross manipulation, often a coarse
search for a proper setting; TWEAK connotes fine-tuning. If someone is
turning a knob on an oscilloscope, then if he’s carefully adjusting it
he is probably tweaking it; if he is just turning it but looking at the
screen he is probably twiddling it; but if he’s just doing it because
turning a knob is fun, he’s frobbing it.