切菜 (qiē cài) literally means 'to cut vegetables' and functions as a verb describing the kitchen activity of chopping, dicing, or slicing raw vegetables — such as cucumbers, carrots, or cabbage — in preparation for cooking. The first character 切 (qiē) means 'to cut' or 'to slice', while 菜 (cài) means 'vegetable' or 'dish' (in broader contexts), but here specifically refers to uncooked vegetables. It is a common, everyday term used in home cooking, culinary instruction, and food-related conversations.

This verb is typically used in the active voice with a human subject performing the action, often followed by an object specifying which vegetable (e.g., 切菜、切黄瓜、切白菜) or by aspect markers like 了 or 着 to indicate completion or ongoing action. It does not refer to cutting meat or fruit — those use different verbs (e.g., 剁肉 for mincing meat, 削水果 for peeling fruit). While it can occasionally appear as a noun (e.g., 切菜的刀), its primary function is verbal.