(Of quantities) Imprecise but fairly close to correct; SYN. about, close to, just about, some, roughly, more or less, around, or so.

ETYM Pref. a- + round.
1. By a circular or circuitous route.
2. In a circle or circular motion.
3. In circumference.
4. To a particular destination either specified or understood.

Abbreviation for circa (Latin “about”); used with dates that are uncertain.

circa

About; around.

From beginning to end; throughout; SYN. around.

1. About
2. In some degree; somewhat; to some degree or extent; a little — used as a mild intensive

(Homonym: I, aye).
The organ of sight ('peeper' is an informal term for 'eye'); SYN. oculus, optic, peeper.
The organ of vision. In the human eye, the light is focused by the combined action of the curved cornea, the internal fluids, and the lens. The insect eye is compound—made up of many separate facets—known as ommatidia, each of which collects light and directs it separately to a receptor to build up an image. Invertebrates have much simpler eyes, with no lenses. Among mollusks, cephalopods have complex eyes similar to those of vertebrates.
The mantis shrimp's eyes contain ten color pigments with which to perceive color; some flies and fishes have five, while the human eye has only three.
Human eye.
This is a roughly spherical structure contained in a bony socket. Light enters it through the cornea, and passes through the circular opening (pupil) in the iris (the colored part of the eye).
The ciliary muscles act on the lens (the rounded transparent structure behind the iris) to change its shape, so that images of objects at different distances can be focused on the retina. This is at the back of the eye, and is packed with light-sensitive cells (rods and cones), connected to the brain by the optic nerve. + prikaži više

1. A spherical body; a globe; especially, one of the heavenly bodies: a sun, planet, or star.
2. A circle; esp., a circle, or nearly circular orbit, described by the revolution of a heavenly body; an orbit.
3. A period of time marked off by the revolution of a heavenly body.
4. One of the azure transparent spheres thought by the ancients to be inclosed one within another, and to carry the heavenly bodies in their revolutions.
5. (Archaic) The eye, as luminous and spherical.
6. A sphere of action. + prikaži više

1 — used as a function word to indicate presence or occurrence in, on, or near
2 — used as a function word to indicate the goal of an indicated or implied action or motion
3 — used as a function word to indicate that with which one is occupied or employed
4 — used as a function word to indicate situation in an active or passive state or condition
5 — used as a function word to indicate the means, cause, or manner
6 a — used as a function word to indicate the rate, degree, or position in a scale or series b — used as a function word to indicate age or position in time + prikaži više

(Latin) “about” (abbr. c.)(Latin) Around; approximately; often used when a precise date is not known
About; around
At, in, or of approximately — used especially with dates