stigma

In flowering plants, the part of the carpel receptive to pollen. Sticky secretions, corrugated surfaces, or hairs may help collect and retain pollen grains. Those of wind-pollinated flowers are often feathery, to increase the contact area, while those of insect-pollinated flowers are often borne on elongated styles which present the stigma in the appropriate position to pick up pollen from the insect's body. The stigma, and often the style, may through physiological means operate a complex compatibility system which accepts only pollen of the correct type.

a spiracle or other small spot.

Other uses:

Singular of stigmata, a religious marking on the skin. Social stigma, a "mark of infamy or disgrace; Stigma (anatomy), a small spot, mark, scar, or a minute hole; applied especially to a spot on the outer surface of a Graafian follicle, and to spots of intercellular substance in scaly epithelium, or to minute holes in such spots. Stigma (pathology), a red speck upon the skin, produced either by the extravasation of blood, as in the bloody sweat characteristic of certain varieties of religious ecstasy, or by capillary congestion, as in the case of drunkards. Stigma (geometry), a point so connected by any law whatever with another point, called an index, that as the index moves in any manner in a plane the first point or stigma moves in a determinate way in the same plane. A mark such as that made with a branding iron on cattle or a person Stigma (letter), the name of a ligature of the Greek letters sigma and tau, used also for the number 6 in Greek numerals. Another name for the Koppa, an obsolete letter of the Cyrillic alphabet, derived from the Greek alphabet letter Qoppa. "Stigma" (Enterprise episode), a second season episode of Star Trek: Enterprise. Stigma (DJ) is a DJ from Europe. Stigma (manga) is a Japanese manga story by Kazuya Minekura