n. [ Russ. kozak', kazak': cf. Turk. kazāk. ] One of a warlike, pastoral people, skillful as horsemen, inhabiting different parts of the Russian empire and furnishing valuable contingents of irregular cavalry to its armies, those of Little Russia and those of the Don forming the principal divisions. [ 1913 Webster ]

. (Mil.) An outpost consisting of four men, forming one of a single line of posts substituted for the more formal line of sentinels and line of pickets. [ Webster 1913 Suppl. ]

n. [ F. ] Plain India muslin, of various qualities and widths. [ 1913 Webster ]