1.  calibrate(v = verb.change) fine-tune, graduate - make fine adjustments or divide into marked intervals for optimal measuring; "calibrate an instrument"; "graduate a cylinder"
is one way to adjust, correct, set
Derived form noun calibration₁
Sample sentences: Somebody ----s something

2.  calibrate(v = verb.contact) - mark (the scale of a measuring instrument) so that it can be read in the desired units; "he calibrated the thermometer for the Celsius scale"
is one way to label, mark, tag
Derived form noun calibration₁
Sample sentences: Somebody ----s something

3.  calibrate(v = verb.cognition) - measure the caliber of; "calibrate a gun"
is one way to measure, measure out, mensurate
Derived form noun caliber₂
Sample sentences: Somebody ----s something

   To ascertain the caliber of, as of a thermometer tube; also, more generally, to determine or rectify the graduation of, as of the various standards or graduated instruments. [1913 Webster]

calibrate, v.tr.
1 mark (a gauge) with a standard scale of readings.
2 correlate the readings of (an instrument) with a standard.
3 determine the calibre of (a gun).
4 determine the correct capacity or value of.

Derivative:
calibration n. calibrator n.

Etymology:
CALIBRE + -ATE(3)

VB  be broad, become broad, render broad, expand, thicken, widen, calibrate.