# Friday the thirteenth

> English word · Noun

## Definitions
1. A particular date combination that occurs when the thirteenth day of a month falls on a Friday, and which is considered unlucky in some cultures.

## Etymology
Believed to have been derived from the mass arrest of the Knights Templar on Friday, October 13, 1307.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/friday-the-thirteenth