accusative singular neuter, or nominative/accusative plural neuter (compound noun); alternatively, a hapax or unclear form in the text
Analysis. goppha (hollow, cavity) + kaṭṭhika (bone, wooden element); a compound denoting a bone with a cavity or hollow space within it, or possibly a bone-like object from a specific anatomical context.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
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