Many seem to forget that when it comes to Spanish, words can have Many meanings. This is due to the fact that Spanish speaking countries are Many and each country may inherit the overall generalized definition of a word and at the same time add a Twist or Slang Definition to a particular word as it is defined and used within that culture to stress how that word best fits that culture's needs. For example the word Bicho may be defined as a man's Penis in one Spanish speaking culture yet in another Spanish speaking society Bicho could be used to refer to a cockroach and another culture it may mean a bird.
Used in US as well
"Bicho: Male Penis Bicho: cockroach or similar insect"