Leading off in file (7)

I believe the answer is:

aligned

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

'leading off in file' is the definition.
Both the answer and definition are adjectives. Perhaps you can see a link between them that I don't see?

'leading off' is the wordplay.
'off' indicates anagramming the letters.
'leading' with letters rearranged gives 'ALIGNED'.

Can you help me to learn more?

(Other definitions for aligned that I've seen before include "made to toe the line" , "in a row" , "Linearly positioned" , "Placed in the right relative position" , "Brought into the correct relationship (with)" .)

I've seen this clue in The Globe and Mail.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.