Crossword Genius

A trick absorbed by commoner with craft of an old Greek (10)

Ross

I believe the answer is:

triaconter

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

'craft of an old greek' is the definition.
(I've seen this before)

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for triaconter that I've seen before include "ancient ship" , "craft of an old Greek" .)

I've seen this clue in The Sunday Times and The Times.
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.