From Longman Dictionary of Contemporary Englishukuleleu‧ku‧le‧le, ukelele /ˌjuːkəˈleɪli/ noun [countable] APMa musical instrument with four strings, like a small guitar
Examples from the Corpus
ukulele• A man playing a ukulele and riding a bicycle across the sky.• Before long he had switched to ukulele, and graduated from there to guitar at the age of eleven. 