Stuff is one of the most versatile words in English with multiple meanings:
1. General term for objects or materials: "Put your stuff in the closet."
2. Activities or ideas: "I'm good at computer stuff."
3. To fill something tightly: "She stuffed the turkey with herbs."
4. Informal term for drugs: "He got caught with the stuff."
5. To eat greedily: "He stuffed himself with pizza."
Common phrases: "That's the stuff!" (表示赞赏), "Do your stuff" (展示你的本事)