Train lacking advanced computers and such? (4)
I believe the answer is:
tech
'train' is the definition.
The definition and answer can be both groups as well as being singular nouns.
Perhaps there's a link between them I don't understand?
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for tech that I've seen before include "Abbrev. for a college" , "College teaching practical skills (informal)" , "The practical use of science, in short" , "Kind of college" .)