electro-acoustic transducer for converting electric signals into sounds; it is held over or inserted into the ear
(phonetics) an individual sound unit of speech without concern as to whether or not it is a phoneme of some language
electronic equipment that converts sound into electrical signals that can be transmitted over distances and then converts received signals back into sounds
Definition as Verb
make ready for action or use
call to arms; of military personnel
get ready for war
cause to move around
Definition as Verb
get or try to get into communication (with someone) by telephone