Lapa (adjective/noun) [from lap: see lapati] talkative, talking, prattling; a talker, tattler, prattler, chatterer A II 26; Thag 959 = It 112; Vism 26 (doubled: lapa-lapa) = Nidd I 226 (as lapaka-lapaka).
(adj, adj, from lapati) talkative; chatty; loquacious Construction: √lap + a