Etymology
The origin of pillock is believed to go back to the 16th century meaning
penis from the Norwegian word pillicock, presumably akin to the slang Dickhead meaning inept
fool.
Noun
- a stupid or annoying person; simpleton; fool.
- In some parts of Yorkshire (England) a pillock is a large sharpening stone for a sickle, presumably named because of its resemblance to a penis, and the heavy Norwegian influence to the Old Yorkshire dialect.