Literal protrusions, swellings, or raised marks associated with a monarch or with royal regalia; for example, ornamental protuberances on a crown or decorative raised elements on ceremonial items.
2.
General Englishinformalrare
Rare or jocular figurative use to denote a forceful knock, bruise, or jolt described with an ironic or exaggerated association to royalty; not widely attested as a conventional idiom.