n. Something extremely small or trifling.n. A very small or sharp point: a pinpoint of light. n. A point on a map marking a precise location or target.v. To locate or identify with precision.v. To take precise aim at: pinpoint a target. v. To direct attention to: We pinpointed the flaws in his argument. adj. Meticulously precise: measured the line with pinpoint accuracy. adj. Extremely small; minuscule: pinpoint creatures.