It depends on how well you want to "define" something. Wikipedia describing a duck:
Duck is the common name for a large number of species in the waterfowl family Anatidae which also includes swans and geese. Ducks are divided among several subfamilies in the family Anatidae; they do not represent a monophyletic group (the group of all descendants of a single common ancestral species) but a form taxon, since swans and geese are not considered ducks. Ducks are mostly aquatic birds, mostly smaller than the swans and geese, and may be found in both fresh water and sea water. Ducks are sometimes confused with several types of unrelated water birds with similar forms, such as loons or divers, grebes, gallinules, and coots.
Every ancient-enough religion all starts out, effectively, the same way, in their own "religious dialect": the universe was created, life on Earth was created, and then Mankind invented language. This has made a lot of people very angry and been widely regarded as a bad move.
Things were simply not named before we invented language and named things.
To understand duck you must see a duck (Eat a duck, pet a duck, smell a duck, hear a duck)
Perhaps you could cheat and uses pixels and coordinates to use English to draw photos and videos to explain ducks.