• śabdaḥ — the sound
  From √śabd. The verse foregrounds śabda — sound itself. Gauḍīya note: śabda is the upādāna (material cause) of the Lord's revelation; here the same śabda principle is used in inverted register to terrify the demon.
• kham — the earth (here: space)
  Bhāgavata uses kha for sky / space. The sound fills kha plus rodasī plus diśaḥ — every dimension. Gauḍīya: when the Lord acts, the soundprint of the act saturates the cosmos.
• rodasī — the sky (heaven-and-earth pair)
  Dual of rodas — the Vedic pair of heaven and earth. The Bhāgavata reaches for the most ancient cosmographic term. Kṛṣṇa's act is recorded in Vedic register.
• kaṁsaḥ — King Kaṁsa
  The name of the demon-king. Gauḍīya commentators note that Kaṁsa, the chief of asuric obstruction in Canto 10, is first named in this verse with the verb upāgamat — 'came under,' 'submitted to.' The grammar already shows him submitting to terror.
• trāsam — fear
  From √tras — to tremble. Trāsa is the technical word for the physical shudder. Gauḍīya: even before Kṛṣṇa lifts a finger against him, Kaṁsa's body has begun the trāsa-pose of a defeated demon.
• upāgamat — He experienced, He approached
  Imperfect of upa + ā + √gam. He went-into fear. The Bhāgavata uses motion-verbs for emotion: Kaṁsa enters trāsa as one enters a room. Asura-rasa is being narrated in technical Sanskrit.

• What 'cracking sound' have you heard lately that your inner Kaṁsa is currently terrified of?
• Where would naming it confirm what your conscience already knows?

A great bell rung once in a palace courtyard reverberates through every chamber until even the king on the highest floor goes pale. The bow's crack is heard by Kaṁsa before any messenger reaches him — the demon's body knows what the demon's mind has not yet admitted: his death has begun.