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by Meaning, Definition & Usage

  1. adverb so as to pass a given point
    past.
    • every hour a train goes past
  2. adverb in reserve; not for immediate use
    away; aside.
    • started setting aside money to buy a car
    • put something by for her old age
    • has a nest egg tucked away for a rainy day
WordNet

By preposition
Etymology
OE. bi, AS. bi, big, near to, by, of, from, after, according to; akin to OS.& OFries. bi, be, D. bij, OHG. bi, G. bie, Goth. bi, and perh. Gr.. E. prefix be- is orig.the same word. See pref. Be-.
Definitions
  1. In the neighborhood of; near or next to; not far from; close to; along with; as, come and sit by me.
    By foundation or by shady rivulet He sought them both. Milton.
  2. On; along; in traversing. Compare 5.
    Long labors both by sea and land he bore. Dryden.
    By land, by water, they renew the charge. Pope.
  3. Near to, while passing; hence, from one to the other side of; past; as, to go by a church.
  4. Used in specifying adjacent dimensions; as, a cabin twenty feet by forty.
  5. Against. Obs. Tyndale [1. Cor. iv. 4].
  6. With, as means, way, process, etc.; through means of; with aid of; through; through the act or agency of; as, a city is destroyed by fire; profit is made by commerce; to take by force. To the meaning of by, as denoting means or agency, belong, more or less closely, most of the following uses of the word: (a) It points out the author and producer; as, "Waverley", a novel by Sir W.Scott; a statue by Canova; a sonata by Beethoven. (b) In an oath or adjuration, it indicates the being or thing appealed to as sanction; as, I affirm to you by all that is sacred; he swears by his faith as a Christian; no, by Heaven. (c) According to; by direction, authority, or example of; after; -- in such phrases as, it appears by his account; ten o'clock by my watch; to live by rule; a model to build by. (d) At the rate of; according to the ratio or proportion of; in the measure or quantity of; as, to sell cloth by the yard, milk by the quart, eggs by the dozen, meat by the pound; to board by the year. (e) In comparison, it denotes the measure of excess or deficiency; when anything is increased or diminished, it indicates the measure of increase or diminution; as, larger by a half; older by five years; to lessen by a third. (f) It expresses continuance or duration; during the course of; within the period of; as, by day, by night. (g) As soon as; not later than; near or at; -- used in expressions of time; as, by this time the sun had risen; he will be here by two o'clock. In boxing the compass, by indicates a pint nearer to, or towards, the next cardinal point; as, north by east, i.e., a point towards the east from the north; northeast by east, i.e., on point nearer the east than northeast is. With is used instead of by before the instrument with which anything is done; as, to beat one with a stick; the board was fastened by the carpenter with nails. But there are many words which may be regarded as means or processes, or, figuratively, as instruments; and whether with or by shall be used with them is a matter of arbitrary, and often, of unsettled usage; as, to a reduce a town by famine; to consume stubble with fire; he gained his purpose by flattery; he entertained them with a story; he distressed us with or by a recital of his sufferings. see With. ✍ The common phrase good-by is equivalent to farewell, and would be better written good-bye, as it is a corruption of God be with you (b'w'ye).
By adverb
Definitions
  1. Near; in the neighborhood; present; as, there was no person by at the time.
  2. Passing near; going past; past; beyond; as, the procession has gone by; a bird flew by.
  3. Aside; as, to lay by; to put by.
By adjective
Definitions
  1. Out of the common path; aside; -- used in composition, giving the meaning of something aside, secondary, or incidental, or collateral matter, a thing private or avoiding notice; as, by-line, by-place, by-play, by-street. It was formerly more freely used in composition than it is now; as, by-business, by-concernment, by-design, by-interest, etc.

Webster 1913