Machine on which to get weaving! (4)
I believe the answer is:
loom
'machine' is the definition.
(loom is a kind of machine)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for loom that I've seen before include "Weaving frame - seem ominously close" , "Come into view" , "Menace - weaving device" , "Of future event, seem ominously close" , "Hang menacingly (over)" .)