Source : Webster's Revised Unabridged Dictionary (1913)

Weigh \Weigh\, n. [See {Wey}.]
   A certain quantity estimated by weight; an English measure of
   weight. See {Wey}.

Weigh \Weigh\ (w[=a]), n. (Naut.)
   A corruption of {Way}, used only in the phrase {under weigh}.

         An expedition was got under weigh from New York.
                                                  --Thackeray.

         The Athenians . . . hurried on board and with
         considerable difficulty got under weigh. --Jowett
                                                  (Thucyd.).

Weigh \Weigh\, v. t. [imp. & p. p. {Weighed}; p. pr. & vb. n.
   {Weighing}.] [OE. weien, weyen, weghen, AS. wegan to bear,
   move; akin to D. wegen to weigh, G. w["a]gen, wiegen, to
   weigh, bewegen to move, OHG. wegan, Icel. vega to move,
   carry, lift, weigh, Sw. v["a]ga to weigh, Dan. veie, Goth.
   gawigan to shake, L. vehere to carry, Skr. vah. ????. See
   {Way}, and cf. {Wey}.]
   1. To bear up; to raise; to lift into the air; to swing up;
      as, to weigh anchor. ``Weigh the vessel up.'' --Cowper.

   2. To examine by the balance; to ascertain the weight of,
      that is, the force with which a thing tends to the center
      of the earth; to determine the heaviness, or quantity of
      matter of; as, to weigh sugar; to weigh gold.

            Thou art weighed in the balances, and art found
            wanting.                              --Dan. v. 27.

   3. To be equivalent to in weight; to counterbalance; to have
      the heaviness of. ``A body weighing divers ounces.''
      --Boyle.

   4. To pay, allot, take, or give by weight.

            They weighed for my price thirty pieces of silver.
                                                  --Zech. xi.
                                                  12.

   5. To examine or test as if by the balance; to ponder in the
      mind; to consider or examine for the purpose of forming an
      opinion or coming to a conclusion; to estimate
      deliberately and maturely; to balance.

            A young man not weighed in state affairs. --Bacon.

            Had no better weighed The strength he was to cope
            with, or his own.                     --Milton.

            Regard not who it is which speaketh, but weigh only
            what is spoken.                       --Hooker.

            In nice balance, truth with gold she weighs. --Pope.

            Without sufficiently weighing his expressions. --Sir
                                                  W. Scott.

   6. To consider as worthy of notice; to regard. [Obs. or
      Archaic] ``I weigh not you.'' --Shak.

            All that she so dear did weigh.       --Spenser.

   {To weigh down}.
      (a) To overbalance.
      (b) To oppress with weight; to overburden; to depress.
          ``To weigh thy spirits down.'' --Milton.

Weigh \Weigh\, v. i.
   1. To have weight; to be heavy. ``They only weigh the
      heavier.'' --Cowper.

   2. To be considered as important; to have weight in the
      intellectual balance.

            Your vows to her and me . . . will even weigh.
                                                  --Shak.

            This objection ought to weigh with those whose
            reading is designed for much talk and little
            knowledge.                            --Locke.

   3. To bear heavily; to press hard.

            Cleanse the stuffed bosom of that perilous stuff
            Which weighs upon the heart.          --Shak.

   4. To judge; to estimate. [R.]

            Could not weigh of worthiness aright. --Spenser.

   {To weigh down}, to sink by its own weight.

Source : WordNet®

weigh
     v 1: have a certain weight
     2: show consideration for; take into account; "You must
        consider her age"; "The judge considered the offender's
        youth and was lenient" [syn: {consider}, {count}]
     3: determine the weight of; "The butcher weighed the chicken"
        [syn: {librate}]
     4: have weight; have import, carry weight; "It does not matter
        much" [syn: {count}, {matter}]
     5: to be oppressive or burdensome; "weigh heavily on the mind",
        "Something pressed on his mind" [syn: {press}]