Translation of pounce in Spanish

My boss offered it to me, so that a few more people at work will have a good level of English and now I really have to kick my own ass (I've started last year and it's not going very well).
If I look at dictionaries they do not give long sentences, only specific words and their meaning when they are used in a compounded form, which by the way can mean something totally different than when used by themselves.
I think it is better to send an e-mail. Unfortunately, I have not received any response from you. I have answered your last letter a month ago. I would like to correct your mistakes.