shad·ow·box 
(shădō-bŏks′)
(shădō-bŏks′)intr.v. sha·dow·boxed, sha·dow·box·ing, sha·dow·box·es
To spar with an imaginary opponent, as for exercise or training purposes.
shadow·box′ing n.
- grandiosity
- grandioso
- Grand Junction
- grand jury
- grandkid
- Grand Lama
- grand larceny
- grandly
- grandma
- grand mal seizure
- "Grandma Moses."
- Grand Manan Island
- grand march
- grand master
- grandmaster
- grandmother
- grandmotherly
- grandnephew
- grandness
- grandniece
- grand opera
- grandpa
- grandparent
- grandparental
- grandparenthood