Merriam-Webster's Collegiate® Dictionary, 11th Edition
SIGHT
I. noun
Etymology: Middle English, from Old English gesiht faculty or act of sight, thing seen; akin to Old High German gisiht sight, Old English sēon to see Date: before 12th century something that is seen ; spectacle ,
2. a thing regarded as worth seeing, something ludicrous or disorderly in appearance ,
3. a great number or quantity, a good deal ; lot ,
4. the process, power, or function of seeing, mental or spiritual perception, mental view,
5. the act of looking at or beholding, inspection , perusal, view , glimpse , an observation to determine direction or position (as by a navigator),
6. a perception of an object by or as if by the eye , the range of vision , presentation of a note or draft to the maker or draftee ; demand ,
8. a device that aids the eye in aiming or in finding the direction of an object, aspiration ,
II. verb
Date: 1602
transitive verb to get or catch sight of , to look at through or as if through a sight, to aim by means of sights,
4. to equip with sights, to adjust the sights of, intransitive verb to take aim, to look carefully in a particular direction,
III. adjective
Date: 1801
based on recognition or comprehension without previous study , payable on presentation