Crossword Genius

Old British kind of cross (6)

Ross

I believe the answer is:

celtic

I'm a little stuck... Click here to teach me more about this clue!

'kind of cross' is the definition.

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for celtic that I've seen before include "Scottish club" , "Roy Keane's team on the fringe" , "This tiger is credited with Irish prosperity" , "The Sea between southern Ireland and Cornwall" , "The sea between south Ireland and Cornwall" .)

I've seen this clue in The Globe and Mail.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.