Energetic old worker gets tapestry from London gallery (4)

I believe the answer is:

spry

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

'energetic' is the definition.
(I've seen this in another clue)

I cannot understand how the rest of the clue works.

(Other definitions for spry that I've seen before include "'Active and lively, nimble (4)'" , "Nimble, brisk" , "Nimble (for one's age?)" , "Moving quickly and lightly" , "Sprightly" .)

I've seen this clue in The Irish Times.

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.