1. To hide something in a particular place so that others cannot find it. A noun or pronoun can be used between "bury" and "in." I buried my cupcake in the back of the fridge so no one else would eat it! You can always find change buried in the couch cushions.
2. To hide oneself somewhere. In this usage, a reflexive pronoun is used between "bury" and "in." When guests come over, my shy sister is quick to bury herself in her bedroom so that she doesn't have to talk to anyone.
3. To immerse oneself in a task or project. In this usage, a reflexive pronoun is used between "bury" and "in." Ever since my breakup with Ben, I've tried to bury myself in my work to keep from crying all day long. You will need to bury yourself in your schoolwork to get a passing grade this semester.
bury someone or something in something
1. Lit. to inter someone or something in a grave, the ground, a vault, a tomb, etc. They buried the old man in the family vault. Thousands of war veterans are buried in the national cemetery.
2. Fig. to hide or conceal someone or something from view in some place. The office manager buried Tom at a small desk in the back room. Someone buried the manual typewriter in a room full of old junk.
bury oneself in something
1. Fig. to become very busy with something. She stopped taking phone calls and buried herself in her work. He tended to bury himself in his work.
2. Fig. to hide oneself some place. (Alludes to burying oneself in a cave or something similar.) He buried himself in the back of the little shop and worked quietly. The lizard buried itself in the sand.