observance /əbˈzɚvəns/ noun plural observances
plural observances
Learner's definition of OBSERVANCE
1
[noncount] : the practice of following a custom, rule, law, etc.(习俗、规则、法律等的)遵守,奉行 —
often + of 2
[count] : an act that is part of a ceremony or ritual纪念活动;仪式 —
usually plural通常用复数