For example, Granny Pat is abandoning tank top (4)

I believe the answer is:

knot

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

'tank top' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for knot that I've seen before include "It may be tied" , "Tie; sandpiper" , "Small cluster - huddled group - sheepshank, for example" , "A sheepshank or bowline" , "Rope fastening" .)

I've seen this clue in the Irish Times (Crosaire) and the Irish Times.

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