TO MISS - [verb] to fail to do something that was intented or possible; to feel unhappy because you are not with a certain person
Examples of use
Sarah missed her son so much, after he had gone abroad.
Aim for the moon. If you miss, you may hit a star. (W.Clement Stone)
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English speaking practise
Remember that if you don't use that word in English conversations or writing you'll forget it in a short time. So the best thing you can do to learn this word is just trying to use it in speaking or writing. Remember also that practise is the key to fluent english speaking.
You can always find a partner, who would also like to improve his/her