letter, check, examine

檢 is composed of 木 (wood) and 僉 (all, everyone). 木 refers to wooden slips used for writing, signifying documents or letters, while 僉 depicts multiple people agreeing and responding to commands, extending to mean ensuring accuracy. Thus, 檢 originally refers to written documents, and to ensure their contents are error-free, a thorough examination is required, as represented by 檢, meaning to inspect or check.