It's important to encourage the use of descriptive words in students' writing, even at the early elementary level.
Rather than beat around the bush telling students about "describing words", I introduce the word adjective, define it and give a bunch of examples.
To introduce the term, and help remind students to included adjectives in their writing, I designed this wise owl anchor chart. I hope you can use it.
From Diane, over at TeachWithMe.com