A blockhead, or stupid fellow. We three loggerheads be: a sentence frequently written under two heads, and the reader by repeating it makes himself the third. A loggerhead is also a double-headed, or bar shot of iron. To go to loggerheads; to fall to fighting.
LOGGERHEAD
Meaning of LOGGERHEAD in English
Slang English vocab. Английский сленговый словарь. 2012