neuter; nominative/accusative singular phegguṃ + api (enclitic 'even, also')
Analysis. phegguṃ (neuter singular of pheggu, 'worthless wood') + api (enclitic 'even, also'), forming 'even worthless wood', i.e. something utterly without value. Sandhi: final -ṃ of phegguṃ assimilates before the vowel of api.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
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