noun, feminine/se/
abbreviation of cavalier (“knight”): N
“1.e4 e5 2.Cf3 Cf6 3.d4 exd4 4.e5 Ce4 5.Dxd4 d5 6.exd6e.p. Cxd6 7.Fg5 Cc6 8.De3+ Fe7 9.Cbd2 0-0 10.0-0-0 Te8 11.Rb1 (=)” — 1.e4 e5 2.Nf3 Nf6 3.d4 exd4 4.e5 Ne4 5.Qxd4 d5 6.exd6e.p. Nxd6 7.Bg5 Nc6 8.Qe3+ Be7 9.Nbd2 0-0 10.0-0-0 Re8 11.Kb1 (=)