(botany) A radiating part of a flower or plant; the marginalflorets of a compound flower, such as an aster or a sunflower; one of the pedicels of an umbel or other circular flower cluster; radius.
(obsolete) Sight; perception; vision; from an old theory of vision, that sight was something which proceeded from the eye to the object seen.
(mathematics) A line extending indefinitely in one direction from a point.