北京方言，大概意思是：和对方决一死战，不分出胜负不罢休的意思。 通常前面还有三个字：和你丫死磕！ Sike is the Beijing dialect meaning fighting with one's rival till the end. Habbi

不确定是不是方言，反正东北人说这个词。就是对着干，耗下去~~

i think 死磕 is the vernacular language,because i 'll sometimes say 死磕 if someone come to speak with me when i work very busy ,perhaps the point won't bother to oneself when you doing something. i am sorry my english is poor ,so i don't know my express is clear or not.

I know it means work it horribly hard, someone is trying to work something out so hard that the question amlost kills him/er. But I'm not sure if the southern Chinese can understand it, perhaps you could say it's somewhat a slang word in northern China, and it's definitely an informal word.

"“死磕”是什么意思？在中国北方我不知道是什么意思？ 在湖北"“死磕”好像是“去死吧”的意思！