Cause Ironsides to shoot? (7)

I believe the answer is:

inspire

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

'cause ironsides' is the definition.
'inspire' can be an answer for 'cause' (inspiring is a kind of causing). I am unsure of the 'ironsides' bit.

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for inspire that I've seen before include "Provide lift" , "Breath in; animate" , "Breathe - fire" , "Fill with ideas, enthusiasm" , "Fill with creative purpose" .)

I've seen this clue in the Sydney Morning Herald.

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.