some words of Dravidian origin

bandicoot: Telugu పందికొక్కు pandi-kokku literally "pig-rat"

betel from Portuguese, from Malayalam വെത്തില vettila (OED)

brilliant and beryl? From Pali veḷuriya "precious stone, lapis lazuli", perhaps from a Dravidian source akin to Tamil விளர் viḷar "To become pale; to whiten", வெளிறு veḷiṟu "whiteness"

candy? "probably from Dravidian kaṇṭu, lump" - compare Tamil ௧ண்டு kaṇṭu "1. clod, lump; 2. wen; 3. bead or something like a pendent in an ornament for the neck"

catamaran: Tamil கட்டு kaṭṭu "to tie" plus மரம் maram "tree; wood"

cheroot: Tamil சுருட்டு curuṭṭu "To roll up, coil, curl, fold, twist" from சுரி curi "To be spiral, as conch; to whirl round, eddy, as water"

coir: Malayalam കയറ് kayaṟ "rope, cord"

congee: Tamil கஞ்சி kañci "rice-water" (OED)

corundum: Tamil குருந்தம் kuruntam

cot from Hindi खाट khāṭ "bedstead" from Sanskrit खद्वा khadvā from Tamil கட்டு kaṭṭu "to tie, bind, fasten"

curry: Tamil கறி kaṟi "curry; pepper"

ginger: from Middle Indic (akin to Pali singivera) from Dravidian - compare Tamil இஞ்சி iñci "ginger plant" and வேர் vēr "root".

jute? Bengali jhuṭo (ঝুটো?) from Sanskrit जूट jūṭ "twisted hair (of ascetics and Shiva)", probably of Dravidian origin - compare Proto-Dravidian *ǯuṭ- "tuft of hair"

mango: Malay manga, from Tamil மாங்காய் mā-ṅ-kāy, from மா mā "mango" plus காய் kāy "unripe fruit"

mattar from Hindi मटर maṭar "pea", from Tamil மட்டை maṭṭai "inferior person or thing" (OED) (This dictionary has "a stupid fellow")

mongoose: Marathi मुंगूस muṅgūs "Bengal mongoose", of Dravidian origin - compare Tamil மூங்கா mūṅkā "A species of mongoose", Proto-Dravidian *muŋ- "mongoose"

mulligatawny: Tamil மிளகுத்தண்ணீர் miḷaku-t-taṇṇīr "Mulligatawny, a soup highly seasoned with pepper", from மிளகு miḷaku "black pepper" plus தண்ணீர் taṇ-ṇīr "cold fresh water"

orange: Sanskrit नारङ्ग nāraṅga "orange tree", possibly of Dravidian origin

paratha: perhaps of Dravidian origin; cf Tamil பரத்து parattu- "to spread" (OED)

pariah: Tamil பறையன் paṟaiyaṉ "a caste" from பறை paṟai "Drum; The Paṟaiya caste, as drum-beaters"

patchouli probably from Deccan pacolī; the first part of the word is probably from Dravidian; cf Tamil பச்சை paccai "fragrant plant" (OED)

Rom, Romani: Romani rom "man", probably from Sanskrit डोम्ब ḍomba "lower-caste person", probably from Dravidian, compare Kannada ಡೊಮ್ಬ ḍomba "caste of acrobats, jugglers, clowns", Tamil டொம்பரவர் ṭomparavar, தொம்பர் tompar "A wandering tribe of singers and rope-dancers"

tank? Gujarati tānkh "cistern" (altho most dictionaries have ટાંકી ṭāṅkī) from Sanskrit तडग taḍaga "pond", "perhaps of Dravidian origin" - compare Tamil தடாதம் taṭākam "pond, pool, tank" (Cologne), தட்டம் taṭṭam "tank, pond", Telugu తటాకము taṭākamu "A tank, reservoir, pond, pool"

teak: Malayalam തേക്ക tēkka "the teak tree"