Source : Webster's Revised Unabridged Dictionary (1913)

Empty \Emp"ty\ (?; 215), a. [Compar. {Emptier}; superl.
   {Emptiest}.] [AS. emtig, [ae]mtig, [ae]metig, fr. [ae]mta,
   [ae]metta, quiet, leisure, rest; of uncertain origin; cf. G.
   emsig busy.]
   1. Containing nothing; not holding or having anything within;
      void of contents or appropriate contents; not filled; --
      said of an inclosure, as a box, room, house, etc.; as, an
      empty chest, room, purse, or pitcher; an empty stomach;
      empty shackles.

Emptier \Emp"ti*er\ (?; 215), n.
   One who, or that which, empties.

Emptier \Emp"ti*er\, compar.
   of {Empty}.

Source : WordNet®

empty
     adj 1: holding or containing nothing; "an empty glass"; "an empty
            room"; "full of empty seats"; "empty hours" [ant: {full}]
     2: devoid of significance or point; "empty promises"; "a hollow
        victory"; "vacuous comments" [syn: {hollow}, {vacuous}]
     3: having nothing inside; "an empty sphere"
     4: needing nourishment; "after skipped lunch the men were empty
        by suppertime"; "empty-bellied children" [syn: {empty-bellied}]
     5: emptied of emotion; "after the violent argument he felt
        empty"
     [also: {emptied}, {emptiest}, {emptier}]

empty
     v 1: make void or empty of contents; "Empty the box"; "The alarm
          emptied the building" [ant: {fill}]
     2: become empty or void of its content; "The room emptied"
        [syn: {discharge}] [ant: {fill}]
     3: leave behind empty; move out of; "You must vacate your
        office by tonight" [syn: {vacate}, {abandon}]
     4: remove; "Empty the water"
     5: excrete or discharge from the body [syn: {evacuate}, {void}]
     [also: {emptied}, {emptiest}, {emptier}]

empty
     n : a container that has been emptied; "return all empties to
         the store"
     [also: {emptied}, {emptiest}, {emptier}]

emptier
     See {empty}