a blow that renders the opponent unconscious

En 1990, les internautes sont au nombre de 250. 000, et le standard en vigueur est la disquette de 360 Ko. – 40 years / 40 años / 40 ans by Marie Lebert

If it would only be that of some grand functionary, the Pao- Wang, or the Ko- Wang, or the viceroy of the two Kiangs, the Prince King in person! – The Adventures of a Special Correspondent by Jules Verne

No; it came again- " Ta- lah- lo- ko!" – The Flamingo Feather by Kirk Munroe

C is hard, like k, before a, o, and u; and soft, like s, before e, i, and y: thus the syllables, ca, ce, ci, co, cu, cy, are pronounced, ka, se, si, ko, ku, sy. – The Grammar of English Grammars by Goold Brown

My- ah, Ang- ad- loo and I- o- ko- ti were accepted as permanent members of my party. – My Attainment of the Pole by Frederick A. Cook