Na a. & adv. No, not. See No. [Obs.] --Chaucer.
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Na
n : a silvery soft waxy metallic element of the alkali metal
group; occurs abundantly in natural compounds (especially
in salt water); burns with a yellow flame and reacts
violently in water; occurs in sea water and in the
mineral halite (rock salt) [syn: sodium, atomic number
11]