COIGN
Coign, n.

Defn: A var. spelling of Coin, Quoin, a corner, wedge; — chiefly used in the phrase coign of vantage, a position advantageous for action or observation.

From some shielded nook or coign of vantage.
The Century.

The lithosphere would be depressed on four faces; . . . the four projecting coigns would stand up as continents. Nature.

COIGNE
Coigne (koin), n. Etym: [See Coin, n.]

Defn: A quoin.
See you yound coigne of the Capitol yon corner stone Shak.

COIGNE; COIGNY
Coigne, Coign"y, n.

Defn: The practice of quartering one's self as landlord on a tenant; a quartering of one's self on anybody. [Ireland] Spenser.

COIL
Coil (koil), v.t. [imp. & p. p. Coiled (koild); p. pr. & vb. n.
Coiling.] Etym: [OF. coillir, F. cueillir, to collect, gather
together, L. coligere; col- + legere to gather. See Legend, and cf.
Cull, v. t., Collect.]

1. To wind cylindrically or spirally; as, to coil a rope when not in use; the snake coiled itself before springing.