from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Informal Somewhat unbalanced mentally; touched.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Touched: mildly deranged, somewhat mentally dysfunctional.
- adj. Touched: physically contacted, impacted, or handled.
Alteration (influenced by obsolete tached, of a given disposition) of touched.(American Heritage® Dictionary of the English Language, Fourth Edition)
Variant of touched. (Wiktionary)