telltale
telltaleadjective- [attrib.]revealing, indicating, or betraying something
泄露秘密的,暴露内情的;搬弄是非的;能说明问题的
the telltale bulge of a concealed weapon.
暴露隐藏武器的凸起。
noun- a person, especially a child, who reports others' wrongdoings or reveals their secrets
(尤指儿童)告密者,打小报告者;搬弄是非者
- a device or object that automatically gives a visual indication of the state or presence of something
指示器(或装置)
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