Plegometer : plego METER (ple gomâ e ter) n. An instrument for measuring and recording the force of blows 13. Speedometer : speedo METER (spe domâ et er) n.
Best Answer: A certified letter is sent by a person or a business when they want to mail important information and be sure that it was received. It's not usually a good thing. Collection agencies send them, people involved in legal cases send them, etc... If you won a sweepstakes you would get them.
A certified letter is one where the post office ensures that the letter is only delivered to the person it was addressed to, and records his signature. Anybody can send a certified letter to somebody, for a fee. Legal papers are usually sent in this manner. There should be a return address on the paper slip.