Latte

google

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from Italian (caffè) latte, literally ‘milk (coffee)’.

wiktionary

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Abbreviation of caffè latte, from Italian caffè(“coffee”) + latte(“milk”), from Latin lac, lactis.

latte (plural lattes)

etymonline

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latte (n.)

espresso coffee with milk, by 1990, short for caffè latte, which is an Italian expression meaning literally "milk coffee," from Latin lac (genitive lactis) "milk" (from PIE root *g(a)lag- "milk"). Compare cafe au lait.