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- DictionaryChief of staff/tʃif əv/
noun
- 1. the senior staff officer of a service or command.
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noun
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Identifies the leader of a complex organization, institution, or body of persons
The title chief of staff (or head of staff) identifies the leader of a complex organization such as the armed forces, institution, or body of persons and it also may identify a principal staff officer (PSO), who is the coordinator of the supporting staff or a primary aide-de-camp to an important individual, such as a president, or a senior military officer, or leader of a large organization. Wikipedia