The Celtic knot — a pattern of interlocking lines — is centuries old, carved into ancient stones all over Ireland. But that tattoo on your biceps? Like the fortune cookie, American born and bred.

The thousand-year-old image of the Celtic Knot, characterized by thick interlocking lines that looks like rope, has quickly become the most common tattoo for wide-eyed Irish-Americans. NPR’s Ari ...

A Celtic knot is a symbolic pattern of a looped knot with no beginning or end. ... Russian, and Islamic art and architecture.

The judges tested the remaining contestants' line work in their tattoos in two challenges during episode four of "Ink ... A test of line work in the Celtic tattoos. Updated: Aug. 07, 2013, 5:00 a ...