[f. CORNET sb.2 + -CY.] The position or rank of a cornet.
1761. Biogr. Dict., XII. 477 (Jod.). His uncle diverted him from that pursuit, and gave him a cornetcy in his own regiment.
1809. Wellington, in Gurw., Desp. V. 141. I shall recommend your friend for an Ensigncy: Should you prefer a Cornetcy for him, I may be able to give him one.
1885. Manch. Even. News, 9 May, 3/1. He was afterwards gazetted to a cornetcy in the First Regiment of Life Guards.