say it: TRAK-bawl
trackball is a noun meaning "an electronic device consisting of a rotatable ball in a housing; used to position the cursor and move images on a computer screen". It carries one recorded sense.
an electronic device consisting of a rotatable ball in a housing; used to position the cursor and move images on a computer screen
“a trackball is essentially an upside-down mouse”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for trackball come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.