elephant — A heavy plant-eating mammal with a prehensile trunk, long curved ivory tusks, and large ears, native to Africa and southern Asia. It is the largest living land animal.
homophone — Phonetics. a word pronounced the same as another but differing in meaning, whether spelled the same way or not, as heir and air.
megaphone — a cone-shaped device for magnifying or directing the voice, chiefly used in addressing a large audience out of doors or in calling to someone at a distance. Compare bullhorn.
microphone — an instrument capable of transforming sound waves into changes in electric currents or voltage, used in recording or transmitting sound.
saxophone — a musical wind instrument consisting of a conical, usually brass tube with keys or valves and a mouthpiece with one reed.
styrofoam — Styrofoam is a very light, plastic substance, used especially to make containers.
telephone — an apparatus, system, or process for transmission of sound or speech to a distant point, especially by an electric device.
Four-or-more syllable rhymes
ethnology — The study of the characteristics of various peoples and the differences and relationships between them.