head restraint head resistance • head rhyme · · · Info · Definitions · Synonyms · Characters · · head restraint · · Text Common · · Latin · · Scripts 14 · · Length 3 · · Syllables Definitions · · · (noun) a cushion attached to the top of the back of an automobile's seat to prevent whiplash. Synonyms: headrest, head restraint. · · Noun Definition 1 Synonyms · · · headrest · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 n latin small letter n U+006E r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074