semitrailer semitour • semitrained · · · Info · Definitions · Synonyms · Characters · · semitrailer · · Text Latin · · Script 11 · · Length Definitions · · · (noun) a trailer having wheels only in the rear; the front is supported by the towing vehicle. Synonyms: semi. · · Noun Definition 1 Synonyms · · · semi · · Synonym 1 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074