A device for transmitting conversations and other sounds in real time across distances, now often a small portable unit also capable of running software etc.
A speech segment that possesses distinct physical or perceptual properties, considered as a physical event without regard to its place in the phonology of a language.
To call (someone) using a telephone.
An electronic speaker designed to produce high-frequency sound.
One who or that which makes a tweeting noise.
One who posts messages ("tweets") on the social networking site Twitter.