00More optionsShareSaveReportVideo vocabularyNo vocabulary matches your filterseraUS /'ɪrə/・UK /'ɪərə/NounPeriod characterized by particular events, peopleA major division of geological time, usually divided into periods.B1More sinUS /sɪn/・UK /sɪn/NounAct that breaks a religious lawIntransitive VerbTo do something that breaks a religious lawB1More dimeUS /daɪm/・UK /daɪm/Countable NounCoin worth 10 US centsB2More hayUS /he/・UK /heɪ/Uncountable NounDry grass used as food for animalsB1More Use EnergyUnlock All VocabularyUnlock pronunciation, explanations, and filtersUnlock