Trump repeats claim Comey’s '86 47' post threatened to kill him

6 articles · Updated · abcnews.com · Apr 30

Comey, indicted by a North Carolina grand jury, appeared in federal court after surrendering in Virginia and faces two threat-related charges over the deleted Instagram seashell image.
Trump again called “86” a mob term for murder, while the Justice Department said a reasonable recipient would read the post as a serious threat to the president.
The interpretation remains disputed: dictionaries mainly define “86” as ejecting or removing, and Republican Senator Thom Tillis said he found no evidence linking it to violent threats.

How might courts determine whether vague slang like '86' truly constitutes a threat, especially when widely recognized definitions differ?