Meaning of loggerhead

log•ger•head

1. a thick-headed or stupid person; blockhead.
2. See
3. See
4. a ball or bulb of iron with a long handle, used, after being heated, to melt tar, heat liquids, etc.
5. a rounded post, in the stern of a whaleboat, around which the harpoon line is passed.
6. a circular inkwell having a broad, flat base.
7. engaged in a disagreement or dispute; quarreling: They were at loggerheads over the distribution of funds.