牛乳
ぎゅうにゅう · gyuunyuu · JLPT N5 · noun
milk
🥛🐄 牛乳 = cow (牛 gyuu) + milk (乳 nyuu)
牛 is cow, read gyuu as in gyuudon (beef bowl). 乳 means milk, read nyuu. The two readings rhyme: gyuu-nyuu, literally cow milk. The same 乳 appears in 豆乳 (tounyuu), soy milk.
牛 — pictograph of an ox head with horns
牛 is a pictograph that originally depicted the head of an ox or cow, with the top strokes representing the curved horns and the vertical line the face. Early oracle bone forms show the horns clearly. The meaning has remained stable for over three thousand years: cattle, ox, or cow.