Horsy types on board (7)
I believe the answer is:
knights
'horsy types' is the definition.
The definition and answer can be both man-made objects as well as being plural nouns.
Perhaps you can see a link between them that I can't see?
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for knights that I've seen before include "Honoured men" , "Chessmen shaped as head of horse" , "Also 3 down" , "Chess pieces" .)