How to use 'check'

’Check’ as a verb can mean examine the quality, condition or suitability of something. Can you check this essay for me? ’Check’ can mean find out about something. Could you check which room we’re meeting in? ’Check’ is an examination to make sure something is correct or in a suitable condition. There are security checks on the way into the concert hall. If you play chess, ’check’ is what you say when you can win. Check mate. I win!