| jack | male donkey |
|---|---|
| jack | a man who is a stupid fool |
| jack | large spotted bat of southwestern United States having enormous ears |
| jack | small penguin of South America and southern Africa with a braying call |
| jack | (19th century) a man's high tasseled boot |
| jack | common black-and-gray Eurasian bird noted for thievery |
| jack | a short coat |
| jack | an outer wrapping or casing |
| jack | the tough metal shell casing for certain kinds of ammunition |
| jack | (dentistry) an artificial crown fitted over a broken or decayed tooth |
| jack | the outer skin of a potato |
| jack | put a jacket on |