Making speed from the stronghold (8)
I believe the answer is:
fastness
This might be a double definition.
'making speed' is the first definition.
'fastness' can be an answer for 'speed' (fastness is a kind of speed). I'm not sure about the 'making' bit.
'the stronghold' is the second definition.
(I've seen this before)
'from' acts as a link.
Can you help me to learn more?
(Other definitions for fastness that I've seen before include "quality of not fading" , "Keep" , "Strongly fortified defensive place" , "speed?" , "Secure refuge" .)