dustமருந்தடிmaruntaṭi(marundaḍi)(6b intr)spray or sprinkle (as an insecticide) over (as plants, furniture, etc.)
Usage:
செடிகளுக்கு மருந்தடித்தால்தான் நன்றாக வளரும்ceṭikaḷukku maruntaṭittāltāṉ naṉṟāka vaḷarum
ceḍikkellaam marundaḍiccaadaan nallaa vaḷarum
The plants will grow well only if you dust them with insecticide.