SUBVERT v. 2 definitions
To overturn from the foundation; to overthrow; to ruin utterly. These are his substance, sinews, arms, and strength, With which he yoketh your rebellious necks, Razeth your cities, and subverts your towns. Shak. This would subvert the principles of all knowledge. Locke.
TAIL n.
See Tailing, n., 5. Tail beam. (Arch.) Same as Tailpiece. -- Tail coverts (Zoöl.), the feathers which cover the bases of the tail quills. They are sometimes much longer than the quills, and form elegant plumes. Those above the quills are called the upper tail coverts, and those below, the under tail coverts. -- Tail…