null /ˈnʌl/
 空,零迅號,零(a.)無效力的,無效的,無價值的


 null
 空的; 空; 無; 零; 空白; 虛字; 空( 字元 ) NUL


 null
 空


 Null a.
 1. Of no legal or binding force or validity; of no efficacy; invalid; void; nugatory; useless.
 Faultily faultless, icily regular, splendidly null,
 Dead perfection; no more.   --Tennyson.


 Null, n.
 1. Something that has no force or meaning.
 2. That which has no value; a cipher; zero.
 Null method Physics., a zero method. See under Zero.


 Null, v. t.  To annul. [Obs.]


 Null, n.  One of the beads in nulled work.

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 null
      adj : lacking any legal or binding force; "null and void" [syn: void]
      n : a quantity of no importance; "it looked like nothing I had
          ever seen before"; "reduced to nil all the work we had
          done"; "we racked up a pathetic goose egg"; "it was all
          for naught"; "I didn't hear zilch about it" [syn: nothing,
           nil, nix, nada, aught, cipher, cypher, {goose
          egg, naught, zero, zilch, zip]