to work hard on something for a long period
দীর্ঘ সময় ধরে কঠোর পরিশ্রম করা
"She grinded away at her studies to pass the exam."
"সে পরীক্ষায় পাস করার জন্য দিনরাত পড়াশোনা করেছে।"
to make a firm decision or opinion known
to trust your own abilities and potential
in prison
to work very hard without rest
to understand something fully
to make a decision based on your feelings