having an indicated pole (as the distinction between positive and negative electric charges); "he got the polarity of the battery reversed"; "charges of opposite sign"
a streak of light in the sky at night that results when a meteoroid hits the earth's atmosphere and air friction causes the meteoroid to melt or vaporize or explode
notion consisting of a narrow strip of fine material used for trimming
a long strip of inked material for making characters on paper with a typewriter
any long object resembling a thin line; "a mere ribbon of land"; "the lighted ribbon of traffic"; "from the air the road was a grey thread"; "a thread of smoke climbed upward"