Crossword Genius

Railway employees drag us off (6)

Ross

I believe the answer is:

guards

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

'railway employees' is the definition.
The definition and answer can be both people as well as being plural nouns.
Maybe they are linked in a way I don't understand?

'drag us off' is the wordplay.
'off' is an anagram indicator.
'drag'+'us'='dragus'
'dragus' with letters rearranged gives 'GUARDS'.

Can you help me to learn more?

(Other definitions for guards that I've seen before include "Keeps watch" , "They protect" , "Defends" , "Sentries" , "They keep watch" .)

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