loggerhead

loggerhead is a Noun

Definition:

[1] A blockhead; a dunce; a numskull. Shak. Milton.

[2] A spherical mass of iron, with a long handle, used to heat tar.

[3] An upright piece of round timber, in a whaleboat, over which a turn of the line is taken when it is running out too fast. Ham. Nav. Encyc.

[4] A very large marine turtle (Thalassochelys caretta, or caouana), common in the warmer parts of the Atlantic Ocean, from Brazil to Cape Cod; -- called also logger-headed turtle.

[5] An American shrike (Lanius Ludovicianus), similar to the butcher bird, but smaller. See Shrike. To be at loggerheads, To fall to loggerheads, or To go to loggerheads, to quarrel; to be at strife. L` Estrange.