大米 (dà mǐ) literally means 'big rice' — but it does not refer to oversized grains. Instead, it is the standard term for hulled, uncooked white rice: the everyday staple grain after the outer husk and bran layers have been removed. The character 大 (dà) here historically distinguishes it from other types of grain or unprocessed rice (like 糙米 cāo mǐ, brown rice), while 米 (mǐ) means 'rice' or 'hulled grain' in general. It’s a countable noun used with measure words like 袋 (dài, 'bag') or 斤 (jīn, 'catty'), and appears frequently in grocery contexts, cooking instructions, and food labeling.

Unlike 米饭 (mǐ fàn), which means cooked rice served as a dish, 大米 specifically refers to the raw, dry grain before cooking. It’s rarely used metaphorically and almost never in abstract or idiomatic expressions — its usage stays firmly grounded in food, agriculture, and household provisioning. In southern China, it may occasionally be contrasted with 粳米 (jīng mǐ) or 糯米 (nuò mǐ) to specify rice varieties, but on its own, 大米 implies ordinary, non-glutinous, white rice.