What does annual turnover of a company means? Does it mean Cost of sales?

I need to fill up my sales turnover for an insurance policy but dont know how to do so. When i look into my Financial statement done by my auditor, i cant find the word turnover but i come across Revenue, cost of sales, Gross profit and Finance cost. I am not able to check with my auditor as he's not a helpful person. Kindly ist me if you know. Thank you.