Write the words and pronunciation of the words you want to memorize onto index cards.
Write the definition on the other side of the cards. You could also write a couple of sentences that demonstrate how the word is used.
Practice with the cards. Look at the word on the first card and read it aloud. Without turning it over say what you think it means. Flip the card over to see if you were right. Then place it at the bottom of the deck.
Go through the entire deck in this way. When you get back to the first card, shuffle them and start again. Repeat this process until you feel you have mastered the words.