from The Century Dictionary and Cyclopedia
- n. Same as trace-horse.
Sorry, no etymologies found.
They were creeping across a flank of the hill when the off-leader sprang to the left so violently that nothing but the instinctive bracing of his trace-mate held them from going over the grade.
As Messala turned in, the bronze lion's head at the end of his axle caught the fore-leg of the Athenian's right-hand trace-mate, flinging the brute over against its yoke-fellow.
I ate her trace-mate, and was rather close to eating