Definify.com
Definition 2024
tin-foil_hat
tin-foil hat
See also: tinfoil hat
English
![](http://llc12.www.definify.com/images_main/Tinfoil_hat_socksnake.jpg)
A sockpuppet with a tin-foil hat
Alternative forms
Noun
tin-foil hat (plural tin-foil hats) (sometimes abbreviated TFH)
- A piece of headgear made from one or more sheets of tin foil, aluminium foil, or other similar material, the hats worn in the belief that they act to shield the brain from such influences as electromagnetic fields, or against mind control and/or mind reading