爆米花 (bào mǐ huā) means “popcorn”

More examples

看电影时，我会买一桶爆米花。kàn diàn yǐng shí wǒ huì mǎi yì tǒng bào mǐ huā

When I watch a movie, I buy a tub of popcorn.

Hard corn kernels swell and burst under heat into light, crisp pieces.

把玉米粒加热，使它们突然爆开并变成松脆食品。bǎ yù mǐ lì jiā rè shǐ tā men tū rán bào kāi bìng biàn chéng sōng cuì shí pǐn

The compound 爆 (bào, "burst") + 米 (mǐ, "grain") + 花 (huā, "flower") names kernels that burst into flower-like pieces.

Cinema snack menus often display this word, linking food vocabulary with a familiar film-going setting.