Definition of tweeters:
(n) :
(social media) One who posts messages ("tweets") on the social networking site Twitter.
(n) :
(social media, by extension) A poster on a microblogging social networking service.
(n) :
(electronics) An electronic speaker designed to produce high-frequency sound.
(n) :
One who or that which makes a tweeting noise.
(n) :
Alternative letter-case form of tweeter (“Twitter user”). [(electronics) An electronic speaker designed to produce high-frequency sound.]