Definition of loggerhead

• n. - A blockhead; a dunce; a numskull.
• n. - A spherical mass of iron, with a long handle, used to heat tar.
• n. - 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.
• n. - A very large marine turtle (Thalassochelys caretta, / caouana), common in the warmer parts of the Atlantic Ocean, from Brazil to Cape Cod; -- called also logger-headed turtle.
• n. - An American shrike (Lanius Ludovicianus), similar to the butcher bird, but smaller. See Shrike.