The word anugava is irregularly formed by adding the affix ac and has the sense of 'suited to the length of the cows'.,
Thus अनुगवं यानं \the chariot suited to the length of the oxen\. This compound is formed by 2.1.16. Why do we say when meaning \the length\? Observe, गवां पश्चाद् = अनुगु ॥,