not harm a hair of head

Meaning

1. not harm / touch a hair of sb's head

   to not hurt sb physically in any way

From the same entry

• get in hair
• the hair of the dog
• keep your hair on
• let your hair down
• make hair stand on end
• not have a hair out of place
• not turn a hair
• hang by a hair
• not see hide nor hair of
• split hairs
• tear your hair