V. S. Apte, The Practical Sanskrit–English Dictionary. Look up any word of the Gita in Devanagari, IAST or Harvard-Kyoto, or browse the headwords letter by letter.
Entry तम्
तम्tam4 P. (ताम्यति, तान्त)
4 Parasmaipada (ताम्यति, तान्त)
To choke, be suffocated.
To be exhausted or fatigued; ललितशिरीषपुष्पहननैरपि ताम्यति यत् Māl.5.31.
To be distressed (in body or mind), be uneasy or pained, pine, waste away; प्रविशति मुहुः कुञ्जं गुञ्जन्मुहुर्बहु ताम्यति Gīt.5; गाढोत्कण्ठा ललितलुलितैरङ्गकै- स्ताम्यतीति Māl.15;9.33; तृष्णे मुधा ताम्यसि Mu.3.1; नार्यो मुग्धशठा हरन्ति रमणं तिष्ठन्ति नो वारितास्तत्किं ताम्यसि ... Amaru.8.
To stop, become immovable; Rāj. T. 5.345.
To wish, desire. -Causal (तमयति) To suffocate, choke.
taṁ tathā kṛpayāviṣṭamaśrupūrṇākulekṣaṇam, — Sanjaya said to him thus by pity invaded, his eyes full and distressed with tears, his heart overcome by depression and discouragement, Madhusudana… 2·1
तम्tamaccusative singular of the masculine form of the pronoun tad (that).