探头 Traditional form: 探頭 Pinyin (reading): tàntóu Definitions: to extend one's head (out or into) a probe detector search unit Characters: 探 - to find, to locate; to grope for, to search for 头 - head; chief, boss; first, top Traditional characters: 探 - to find, to locate; to grope for, to search for 頭 - head; chief, boss; first, top