Definition of "tofu"

tofu

/ˈtoʊfu/

noun
countable and uncountable, plural tofus
1. A protein-rich food made from curdled soy milk.
  Quotations
  First, marinate the tofu. In a bowl, whisk the kecap manis, chilli sauce, and sesame oil together. Cut the tofu into strips about 1cm thick, mix gently (so it doesn't break) with the marinade and leave in the fridge for half an hour.
  2012 May 8, Yotam Ottolenghi, Sami Tamimi, Ottolenghi: The Cookbook‎, Random House, page 79
2. (computing, typography) A box or rectangle, empty or with a question mark or hexadecimal code inside, displayed by some systems in place of a character not supported by available fonts. (such as □ or 𐕪)