Logger boots are a particular design of work boot, common to loggers of course but also worn by people engaged in many other professions as well. People who are on their feet all day and require sturdy footwear, but don't necessarily require the utmost in maneuverability are often well-served by logger boots.
They are also a good choice of footwear for use in the backcountry if properly constructed.
The logger boot design usually - though not always - features a more square toe than narrow, a raised heel cap, and normally is 8 to 10 inches tall. The lace pattern is often lace-to-toe but isn't always. There may be a kiltie on the tongue, there may not; that often depends on who makes it or customer demand.