noun

• Anything that amplifies, or makes something larger or more intense.
• (linguistics) An adverb that adds intensity, such as "really" or "totally".
• (electronics) An appliance or circuit that increases the strength of a weak electrical signal without changing the other characteristics of the signal.
• (music) A portable encasement that houses a large speaker, used to amplify voices and musical instruments at live performances.
• A lens that enlarges the field of vision.