The Collaborative International Dictionary of English v.0.48:

Brush \Brush\, v. t. [imp. & p. p. Brushed (br[u^]sht); p. pr.
   & vb. n. Brushing.] [OE. bruschen; cf. F. brosser. See
   Brush, n.]
   1. To apply a brush to, according to its particular use; to
      rub, smooth, clean, paint, etc., with a brush. "A' brushes
      his hat o' mornings." --Shak.
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   2. To touch in passing, or to pass lightly over, as with a
      brush.
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            Some spread their sailes, some with strong oars
            sweep
            The waters smooth, and brush the buxom wave.
                                                  --Fairfax.
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            Brushed with the kiss of rustling wings. --Milton.
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   3. To remove or gather by brushing, or by an act like that of
      brushing, or by passing lightly over, as wind; -- commonly
      with off.
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            As wicked dew as e'er my mother brushed
            With raven's feather from unwholesome fen. --Shak.
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            And from the boughts brush off the evil dew.
                                                  --Milton.
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   To brush aside, to remove from one's way, as with a brush.


   To brush away, to remove, as with a brush or brushing
      motion.

   To brush up, to paint, or make clean or bright with a
      brush; to cleanse or improve; to renew.
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            You have commissioned me to paint your shop, and I
            have done my best to brush you up like your
            neighbors.                            --Pope.
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The Collaborative International Dictionary of English v.0.48:

Brushing \Brush"ing\, a.
   1. Constructed or used to brush with; as a brushing machine.
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   2. Brisk; light; as, a brushing gallop.
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WordNet (r) 3.0 (2006):

brushing
    n 1: the act of brushing your teeth; "the dentist recommended
         two brushes a day" [syn: brush, brushing]
    2: the act of brushing your hair; "he gave his hair a quick
       brush" [syn: brush, brushing]