jawbreaker

剑桥词典

jawbreaker noun [C] (SWEET)

US (also mainly UK gobstopper)
a large , hard, round sweet
大块硬糖，大块糖球

jawbreaker noun [C] (LANGUAGE)

UK informal
a tongue-twister
绕口令（同 tongue twister）
US and Australian English informal
a word that is difficult to pronounce
难发音的词，拗口的词 返回 jawbreaker