The third degree of Freemasonry and the rigorous procedures to advance to that level. The term may have been coined by nineteenth century New York City Police detective Thomas F. Byrnes, perhaps as a pun on his name, as in third degree burns. The Knights of Columbus have a third degree ceremony which is required to advance to that level, seen as rigorous.
The bugle developed from early musical or communication instruments made of animal horns, with the word bugle itself coming from buculus, Latin for bullock (castrated bull).
A bedbug (or bed bug) is a small, elusive, parasitic insect of the family Cimicidae. They live by feeding on the blood of humans and other warm-blooded animals. The name 'bed bug' is used as the bug likes to live in houses, and especially in beds or other areas where people may sleep. Bedbugs are mainly active at night and can feed without people noticing.