used with the meaning

[GoldfishLord]

Abjure may be used to mean “to abstain from” or “to give up,” but often is used with the meaning of “to disclaim formally or renounce upon oath” (it comes from the Latin jurare, meaning “to swear”).

Source: https://www.merriam-webster.com/dictionary/abrogate

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I know the meaning of the sentence. However I can't understand why "the" was used in place of "a".
What's the reason why "the" was used instead of "a"?

 

[5jj]

It's one particular defined meaning.

 

[GoldfishLord]

I think that "the" should be changed to "a" because "abjure" has several meanings.
Where am I wrong?

 

[5jj]

There is only one meaning defined as “to disclaim formally or renounce upon oath”.

 

[Barque]

Abjure may be used to mean “to abstain from” or “to give up,” but often is used with the meaning of “to disclaim formally or renounce upon oath” (it comes from the Latin jurare, meaning “to swear”).

Source: https://www.merriam-webster.com/dictionary/abrogate

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I know the meaning of the sentence. However I can't understand why "the" was used in place of "a".
What's the reason why "the" was used instead of "a"?

You could use "a" but it'd be unnatural.

GoldfishLord, I'm sorry but I don't think your English is good enough yet that you you can try and pick holes in sentences by native speakers.

 

[5jj]

Given the quality of what some native speakers produce, I think it's legitimate for learners to ask about what they think might be mistakes.