Crossword Genius

Inspire everyone to overwhelm Welsh defence (8)

Ross

I believe the answer is:

firewall

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

'defence' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'inspire everyone to overwhelm welsh' is the wordplay.
'inspire' becomes 'fire' (I've seen this in another clue).
'everyone' becomes 'all' (all people).
'to overwhelm' indicates putting letters inside.
'welsh' becomes 'W' (abbreviation).
'fire'+'all'='fireall'
'fireall' placed around 'w' is 'FIREWALL'.

Can you help me to learn more?

(Other definitions for firewall that I've seen before include "Computer security system against online attack" , "A protective system" , "network protection" , "Software protection for computer" .)

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