The sources checked do not record Mäcky as a name or give it a meaning.
Playful
Funny
Gold, White, Brown, Black, Cream
Any Size
Unisex
Others
M
5 Letters
A surname
From earlier Calchow, from Middle Welsh Calchvynyð, 'lime mountain'
Recorded as a rare masculine given name in English
A diminutive of Andrés
No documented meaning in the sources checked
A nickname, borne by the trance musician Onno Borgen