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noun
1.
the power or faculty of seeing; perception of objects by use of the eyes; vision.
2.
an act, fact, or instance of seeing.
3.
one’s range of vision on some specific occasion:
Land is in sight.
4.
a view; glimpse.
5.
mental perception or regard; judgment.
6.
something seen or worth seeing; spectacle:
the sights of London.
7.
Informal. something unusual, surprising, shocking, or distressing:
They were a sight after the fight.
8.
Commerce.

presentation of a bill of exchange:
a draft payable at two months after sight.
a showing of goods, especially gems, held periodically for wholesalers.

9.
Older Use. a multitude; great deal:
It’s a sight better to work than to starve.
10.
an observation taken with a surveying, navigating, or other instrument to ascertain an exact position or direction.
11.
any of various mechanical or optical viewing devices, as on a firearm or surveying instrument, for aiding the eye in aiming.
12.
Obsolete. skill; insight.
verb (used with object)
13.
to see, glimpse, notice, or observe:
to sight a ship to the north.
14.
to take a sight or observation of (a stake, coastline, etc.), especially with surveying or navigating instruments.
15.
to direct or aim by a sight or sights, as a firearm.
16.
to provide with sights or adjust the sights of, as a gun.
verb (used without object)
17.
to aim or observe through a sight.
18.
to look carefully in a certain direction.
Idioms
19.
at first sight, at the first glimpse; at once:
It was love at first sight.
20.
at sight,

immediately upon seeing, especially without referring elsewhere for assurance, further information, etc.:
to translate something at sight.
Commerce. on presentation:
a draft payable at sight.

21.
catch sight of, to get a glimpse of; espy:
We caught sight of the lake below.
22.
know by sight, to recognize (a person or thing) seen previously:
I know him by sight, but I know nothing about him.
23.
not by a long sight, Informal. definitely not:
Is that all? Not by a long sight.
24.
on / upon sight, immediately upon seeing:
to shoot him on sight; to recognize someone on sight.
25.
out of sight,

beyond one’s range of vision.
Informal. beyond reason; exceedingly high:
The price is out of sight.
Slang. (often used as an interjection) fantastic; marvelous: a ceremony so glamorous it was out of sight.
Oh wow! Out of sight!

26.
sight for sore eyes, someone or something whose appearance on the scene is cause for relief or gladness.
27.
sight unseen, without previous examination:
to buy something sight unseen.
noun
1.
the power or faculty of seeing; perception by the eyes; vision related adjectives optical visual
2.
the act or an instance of seeing
3.
the range of vision: within sight of land
4.
range of mental vision; point of view; judgment: in his sight she could do nothing wrong
5.
a glimpse or view (esp in the phrases catch sight of, lose sight of)
6.
anything that is seen
7.
(often pl) anything worth seeing; spectacle: the sights of London
8.
(informal) anything unpleasant or undesirable to see: his room was a sight!
9.
any of various devices or instruments used to assist the eye in making alignments or directional observations, esp such a device used in aiming a gun
10.
an observation or alignment made with such a device
11.
an opportunity for observation
12.
(obsolete) insight or skill
13.
(informal) a sight, a great deal: she’s a sight too good for him
14.
a sight for sore eyes, a person or thing that one is pleased or relieved to see
15.
at sight, on sight

as soon as seen
on presentation: a bill payable at sight

16.
know by sight, to be familiar with the appearance of without having personal acquaintance: I know Mr Brown by sight but we have never spoken
17.
(informal) not by a long sight, on no account; not at all
18.
out of sight

(slang) not visible
extreme or very unusual
(as interj.): that’s marvellous!

19.
set one’s sights on, to have (a specified goal) in mind; aim for
20.
sight unseen, without having seen the object at issue: to buy a car sight unseen
verb
21.
(transitive) to see, view, or glimpse
22.
(transitive)

to furnish with a sight or sights
to adjust the sight of

23.
to aim (a firearm) using the sight

sight (sīt)
n.

The ability to see.

Field of vision.