Complex sentence: A "verbum dicendi" (Latin for "word" or "verb of speaking") is a word that expresses speech or introduces a quotation, such as "say", "utter", "ask" or "rumble".
Split into simpler sentences: A "verbum dicendi" (Latin for "word of speaking" or "verb of speaking") is a word that expresses speech or introduces a quotation. English examples of verbs of speaking include "say", "utter", "ask" and "rumble".