Standard Lemma guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
No pronunciation record was provided for this word.
noun
A small wheel, incorporated into a mouse or smartphone, that controls scrolling.
Definition source: English Wiktionary via Wiktextract
Topics: computing, engineering, mathematics, natural-sciences, physical-sciences, sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
Etymology tree English track Proto-Indo-European *kwel- Proto-Indo-European *kwekwléh2 Proto-Germanic *hweulō Old English hwēol Middle English whel English wheel English trackwheel From track + wheel.
