• ājagaram — a python form
  From ajagara (python). The python is the largest non-mythic Indian serpent, but Aghāsura's body is mountain-scale. Gauḍīyas note: the python in Bhāgavatam (e.g. Nahuṣa in 6.13, Sudarśana in 10.34) is a recurring shape for cursed or demonized beings.
• yojana-āyāma — eight miles in length
  Compound: yojana (~ 8 miles) + āyāma (extension). The traditional cosmographic unit. Bhāgavatam is precise about size — the body of the demon is not vague, it is measurable. Kṛṣṇa's expansion in verse 30 will exceed it.
• mahā-adri-pīvaram — as thick as a great mountain
  Compound: mahā (great) + adri (mountain) + pīvara (thick). The Vraja landscape has Govardhana, a real mountain, just to the south. Aghāsura mimics that scale — Vraja's true mountain is Govardhana, lifted in chapter 25; this is its parody.
• guhā-ānanam — mouth like a cave
  Compound: guhā (cave) + ānana (mouth). The cave-mouth is what allows the cowherd boys to mistake the demon for forest scenery in the next verse. The līlā uses optical ambiguity — Kṛṣṇa's pastimes often run on what looks like one thing but is another.
• khalaḥ — the wicked one
  khala — the morally crooked. Bhāgavatam uses khala specifically for demoniac beings whose envy is constitutional. Distinct from a person who happens to act badly; this is character, not behavior.

• 03 - RGS SB 10-12-16-26 Hindi - Aghasur Uddhar Leela-Morning Day-02 - 2014 Haridwar
  His Holiness Radha Govinda Swami· English

Picture a hunter setting a trap so large that he himself disappears into it — a cave-mouth across the entire road, a serpent the length of eight miles. The geometry is unmistakable: only one road, only one way through, only one mouth. Aghāsura has made himself into the very door of his own death.