Human beings can communicate through utilizing various types of languages in the world. However those languages are internationally or locally used by utterances. Undoubtedly, different types of dictionaries are available in English language as a global language in order to support second language learners in realizing word meanings. In this study two different types of advanced learner’s dictionaries are highlighted regarding to the way of expressing or representing word meanings, which are Macmillan and Cambridge advanced learner’s dictionaries. The objective of this study is trying to recognize if there is any difference between these two dictionaries in demonstrating word meanings. Selecting as the most effective one for advanced learners can be count as the second aim of this study. The methodology in this study is purely theoretical. Different features are selected for investigation in both elected dictionaries, such as providing common words, phonetic transcription of the headwords by phonetic symbols. Moreover, the result show that the Macmillan Dictionary provides effective definitions for advanced learners because it lays out the meanings of simple and common words at the same time. Drawing pictures or just by making sketch are the other two ways that followed by both dictionaries and makes word meanings more clear.