Merriam-Webster's Collegiate® Dictionary, 11th Edition
PUG
I. noun
Etymology: obsolete pug hobgoblin, monkey
Date: 1751
any of a breed of small sturdy compact dogs of Asian origin with a smooth, short coat, tightly curled tail, short muzzle, and broad wrinkled face,
2. pug nose , a close knot or coil of hair ; bun ,
II. transitive verb (pugged; pugging)
Etymology: origin unknown
Date: 1843
to work and mix (as clay) when wet especially to make more homogeneous and easier to handle (as in throwing or molding wares),
III. noun
Etymology: by shortening & alteration from pugilist
Date: 1858
boxer I,1,
IV. noun
Etymology: Hindi & Urdu pag foot, step
Date: 1865
footprint