When he's not singing "High Hopes" with Daniel Radcliffe at the Oscars, you can find Joseph Gordon-Levitt exploring the meaning of reinforce with the muppet Murray Monster on "Sesame Street."

Have fun watching. And remember: thinking about a word's meaning, or creating a visual like this one, is a great word-learning technique. That's why we've created explanatory "word blurbs" for the words you're learning on Vocabulary.com.

Sometimes our blurbs will give you a visual image, like Gordon-Levitt does when he reinforces the padding around his watch with bubble wrap. Other times our blurbs will introduce a memory trick, or give you an etymological insight, or break the word into parts that reveal meaning. The blurbs are written to sound like a friend or your favorite English teacher is speaking to you, but if it helps to imagine Gordon-Levitt in the room with you instead, go for it!

(You can also check out Casey Affleck on careful, Colin Farrell on investigate, Jerry O'Connell on observe, and Mark Ruffalo on empathy.)