[1] : The Collaborative International Dictionary of English v.0.48

mash \mash\, v. t. imp.  p. p. mashed; p. pr.  vb. n.
   mashing. akin to g. meischen, maischen, to mash, mix, and
   prob. to mischen, e. mix. see 2d mash.
   to convert into a mash; to reduce to a soft pulpy state by
   beating or pressure; to bruise; to crush; as, to mash apples
   in a mill, or potatoes with a pestle. specifically brewing,
   to convert, as malt, or malt and meal, into the mash which
   makes wort.
   1913 webster

   mashing tub, a tub for making the mash in breweries and
      distilleries; -- called also mash tun, and mash vat.
      1913 webster
see also:
mashed mashing mash mashing tub mash tun mash vat 

Mashing >> M Words
Mashing, definition of term: Mashing
mashing_pag1.html

Cathode-Ray Tub >> C Words
Cathode-Ray Tub, definition of term: Cathode-Ray Tub
cathode-ray+tub_pag1.html

Cathode Ray Tub >> C Words
Cathode Ray Tub, definition of term: Cathode Ray Tub
cathode+ray+tub_pag1.html