- A hole, usually with a cover, through which a person may enter a sewer, boiler, drain, or similar structure.下水道出入孔：一种常带有盖的孔道，人可以由此孔进出排道、锅炉、下水管或类似设施
- cardiae
- cardialgia
- cardialgias
- cardias
- Cardiff
- cardigan
- Cardigan Bay
- cardigans
- Cardin
- cardinal
- cardinal
- cardinalate
- cardinalates
- cardinal flower
- cardinal number
- cardinal numeral
- cardinal point
- cardinals
- Cardinal Stritch College
- Cardinal Stritch College
- cardinal virtue
- carding
- cardio-
- cardio-
- cardioaccelerator