"Gravelle" is a word that refers to a type of coarse gravel or pebbles. The word is pronounced as [ɡræ'vɛl] in IPA phonetic transcription. The spelling of "gravelle" includes a double "l," which indicates a certain sound in the pronunciation. The English language generally uses double consonants to show that the preceding vowel is short. In the case of "gravelle," the double "l" indicates that the "a" should be pronounced with a short vowel sound, as in "cat" or "bat."