Matzah meal (or Matzo meal, in Ashkenazic Hebrew) is just ground matzah. If you have a food processor or a blender, you can put matzah farfel in it to make meal. If you have whole matzah, you can break it into farfel with your fingers. If it's not Passover, you can get almost the same results by simply substituting flour for meal. Matzah meal adds a slightly bitter taste because the cooking of matzah carmelizes and even chars a small amount of the starch. If that matters, you might be able to get the same effect by stirring dry flour in a very hot dry frying pan until it browns just slightly.