Crossword Genius

Tree given dignified treatment after being cut? (5,3)

Ross

I believe the answer is:

first aid

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

'treatment after being cut?' is the definition.
I can't tell whether this definition defines the answer.

'tree given dignified' is the wordplay.
'tree' becomes 'fir' (fir is a kind of tree).
'given' says to put letters next to each other.
'dignified' becomes 'staid' (I've seen this in another clue).
'fir'+'staid'='FIRST-AID'

Can you help me to learn more?

(Other definitions for first aid that I've seen before include "Emergency procedure" , "Immediate medical assistance" , "Emergency medical treatment" , "medical attention" , "Preliminary treatment before doctor comes" .)

I've seen this clue in The Independent.
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