Explanation
Summarizing, restating, or clarifying a point: 'in other words', 'that is to say'.
Formation
Sentence A + つまり + Sentence B (rephrasing)
Detailed explanation
The ～つまり grammar point is used to restate or clarify in a concise way what has been said. It can be translated as 'in other words', 'that is to say', or 'in short'.
Examples
Kare wa daigaku no kyouju desu. Tsumari, senmonka desu.
He is a university professor. In other words, he is an expert.
Kyou wa doyoubi da. Tsumari, ashita wa nichiyoubi da.
Today is Saturday. That is to say, tomorrow is Sunday.
Yamada-san wa tomodachi no oneesan desu. Tsumari, watashitachi no shiriai desu.
Ms. Yamada is my friend's older sister. In short, she's someone we know.
Kanojo wa Furansu shusshin desu. Tsumari, Furansugo ga hanasemasu.
She is from France. In other words, she can speak French.
Practice
Grammar content sourced from hanabira.org.