from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A line bounding a plane figure.
  • noun A surface bounding a solid figure.
  • noun A surface of an object, especially a surface joining a top and bottom.
  • noun A surface of an object that extends more or less perpendicularly from an observer standing in front.
  • noun Either of the two surfaces of a thin, flat object.
  • noun The part within an object or area to the left or right of the observer or of its vertical axis.
  • noun The left or right half of the trunk of a human or animal body.
  • noun The space immediately next to someone.
  • noun The space immediately next to something. Often used in combination.
  • noun One of two or more contrasted parts or places within an area, identified by its location with respect to a center.
  • noun An area separated from another area by an intervening feature, such as a line or barrier.
  • noun One of two or more opposing individuals, groups, teams, or sets of opinions.
  • noun One of the positions maintained in a dispute or debate.
  • noun A distinct aspect.
  • noun Line of descent.
  • noun An incomplete script that shows the lines and cues of a single performer only.
  • noun Chiefly British In billiards, the spin given to a propelled ball by striking it off center.
  • adjective Located on a side.
  • adjective From or to one side; oblique.
  • adjective Minor; incidental.
  • adjective In addition to the main part; supplementary.
  • intransitive verb To provide sides or siding for.
  • intransitive verb To be positioned next to.
  • intransitive verb To align oneself in a disagreement.
  • idiom (on the side) In addition to the main portion.
  • idiom (on the side) In addition to the main occupation or activity.
  • idiom (side by side) Next to each other; close together.
  • idiom (this side of) Verging on; short of.

from The Century Dictionary.

  • Widely; wide; far.
  • To cultivate alongside of, as a row of cotton.
  • To take part with, or the part of, another or others; place one's self on the same side in action or opinion, as against opposition or any adverse force; concur actively: commonly followed by with.
  • To take or choose sides; divide on one side and the other; separate in opposition.
  • In ship- and boat-building, to have a breadth of the amount stated, as a piece of timber: as, it sides 14 inches.
  • To be, stand, or move by the side of; have or take position beside; come alongside of.
  • To be on the same side with, physically or morally; be at or on the side of; hence, to countenance or support.
  • To stand on the same level with; be equal to in position or rank; keep abreast of; match; rival.
  • To place or range on a side; determine the side or party of.
  • To flatten off a side or sides of (timber) by hewing it with a side-ax or broadax, or by sawing.
  • To cut into sides; cut apart and trim the sides of, as a slaughtered animal; also, to carve for the table: as, to side a hog.
  • To push aside.
  • To place at one side; set aside.
  • Wide; large; long; far-reaching.
  • Far; distant.
  • noun In golf, the two players playing together in a best-ball match, a threesome, a foursome, or a four-ball match.


from The American Heritage® Dictionary of the English Language, 4th Edition

[Middle English, from Old English sīde.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Old English sīde, from Proto-Germanic *sīdōn.


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