to think very hard about something
किसी चीज के बारे में बहुत जोर से सोचना (kisi cheez ke baare mein bahut zor se sochna)
"I had to rack my brains to remember her name."
"मुझे उसका नाम याद करने के लिए रैक माई ब्रेन्स करना पड़ा।" (Mujhe uska naam yaad karne ke liye **rack my brains** karna pada.)
to trust your instinct when making a decision
to find a satisfactory compromise between two things
to make unrealistic plans or dreams
to be in control of your own activities or business
to spend time in prison
to think of a plan, idea, or solution