Sabda-vedhi means

Expressions researched:
"Sabda-vedhi means"

Srimad-Bhagavatam Lectures

Śabda-vedhī means if I throw some arrow, it will go to my enemy wherever he is. A little sound of the enemy will attract this weapon, and it is sure to kill my enemy.

Lecture on SB 1.7.19 -- Vrndavana, September 16, 1976:

So Aśvatthāmā was thinking of this brahmāstra. Astraṁ brahma-śiro mene ātma-trāṇaṁ dvijātmajaḥ. Hopelessly. So far, of course, I know that this nuclear weapon was already discovered by the German people and Hitler, it is said that he did not use it. Because he knew it that "If I throw this nuclear weapon there will be devastation." So from this point it can be considered that he had some human consideration. So he's advertised very adversely, but if it is a true fact, then how he could have this human consideration that he did not throw the nuclear weapon? And this was taken by the Americans and it was thrown in Japan. That is the history so far we know. So anyway, as we have got experience, the nuclear weapon is very, very dangerous. Similarly the brahmāstra is also very, very dangerous. And another weapon, they knew this art, śabda-vedhī. Śabda-vedhī means if I throw some arrow, it will go to my enemy wherever he is. A little sound of the enemy will attract this weapon, and it is sure to kill my enemy. Śabda-vedhī. There are many instances in Rāmāyaṇa, Mahābhārata. Śabda-vedhī-vāk.