What is to pass lightly; to glide along in an even, smooth course; to glide along near the surface. Not so when swift Camilla scours the plain, Flies o'er the unbending corn, and skims along the main. Pope called?

skim — To pass lightly; to glide along in an even, smooth course; to glide along near the surface. Not so when swift Camilla scours the plain, Flies o'er the unbending corn, and skims along the main. Pope. (Webster's 1913.)