The Oxford Thesaurus An A-Z Dictionary of Synonyms - pacen.

1) step, stride: Please walk forward two paces. 2) rate (of speed) , tempo, speed, velocity, Colloq clip: We were proceeding at a pace of five miles per hour. --v. 3) walk, stride, tread; traverse: Alistair paced up and down nervously, waiting for word from the surgeon. 4) measure, gauge or gage, judge, rate, estimate, determine, reckon, figure, compute: I was trying to pace myself to conserve some energy for a sprint finish.