a. [f. TRAIL sb.1 + -LESS.] Having no trails; trackless, pathless.
1858. Liverpool Mercury, 27 Aug., 9/6. Not one has failed to find gold in their arduous tramp, although deterred in nearly every case from successfully prosecuting their labours by the absolute impossibility of providing themselves with supplies in a country almost trailless and wholly unprovided with facilities for packing provisions.
1884. Baillie-Grohman, in Century Mag., XXIX. 195. Vast stretches of … forest … clothe their precipitous slopes … in unbroken and perfectly trailless masses.
