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1.
noun. The string holding the tea bag to its tag, enabling the user to raise and lower the tea bag into the cup of tea without wetting their fingers.

also used as an insult, primarily by respectable young children whose parents forbid the use of more profane insults.
"Where would we be without the jinglestring? Making the perfect cup of tea has never been easier."

or

"You are a jinglestring"

or

(points finger and chants) "Jinglestring, jinglestring, jinglestring!"
by BLind_Turn May 30, 2005