(1)(罗马法)服兵役
该词后来延指在任何公共机构服役，无论是民事的还是军事的。

(2)(古)被封为骑士(武士)

• costs de incremento
• costs of administration
• costs of collection
• costs of increase
• costs of prosecution
• costs of the day
• costs on delivery
• costs to abide event
• cosurety
• cotarius
• cotenancy
• cotenant
• coterelli
• cotland
• cotortfeasors
• cotrespassers
• cotrustee
• cotset
• cotsethland
• cotsetus
• cottage
• cottage residence
• cottagium
• cottier tenancy
• cotton note