Every name with the work Milk, no matter what language it is.
1. INDO-EUROPEAN
1.1 Germanic
Melk - Afrikaans
Mælk - Danish
Milch - German
Mjólk - Icelandic
Melk - Dutch
Melk - Norwegian
1.2 Balto-Slavic
Малако [malako] - Belorussian
Mlijeko - Bosnian
Мляко [mlyako] - Bulgarian
Молоко [moloko] - Russian
Mléko - Czech
Mleko - Polish
Mlieko - Slovak
Mleko - Slovene
Mlijeko - Croatian
Piens - Latvian
Pienas - Lithuanian
Млеко [mleko] - Macedonian
1.3 Italic
Llet - Catalan
Leche - Spanish
Lait - French
Latte - Italian
Lac - Latin
Leite - Portuguese
1.4 Celtic
Llaeth - Welsh
Bainne - Irish
1.5 Indo-Iranian
شیر [shir] - Farsi
Şîr - Kurdish
Шир [shir] - Tajik
1.6 Albanian
Qumështi - Albanian
2. NON-INDO-EUROPEAN
ወተት [wätätə] - Amharic (remember that when transcribing languages written in the Ge'ez script, "ä" constitutes an "a" as in the English word "ash")
Piim - Estonian
Söt - Tatar
Lakto - Esperanto
Esne - Basque
Сүү [süü] - Mongolian
Susu - Indonesian
Susu - Javanese
Süt - Turkish
Maziwa - Swahili
حليب [halib] - Arabic
Sut - Uzbek
Tej - Hungarian
Maito - Finnish
Süd - Azeri