1. Lubavitcher - Noun
2. Lubavitcher - Adjective
a member of the Lubavitch movement; a follower of Chabad Hasidism
Source: WordNetHis parents, Abraham and Rivka, arrived in Miami from Brooklyn in the early 1960s as emissaries of the Lubavitcher Rebbe, Menachem Mendel Schneerson. Source: Internet
The building, completed in 1984, was the first of many Chabad houses worldwide designed as architectural reproductions of the residence of the Lubavitcher Rebbe, Rabbi Menachem Mendel Schneerson at 770 Eastern Parkway in Brooklyn, New York. Source: Internet
My foremost role model was the Lubavitcher Rebbe, of blessed memory, who was known for his tremendous Ahavat Yisroel – love for one’s fellow. Source: Internet
And this 2014 post on The Lubavitcher Rebbe's 20th yahrzeit is also of interest for this article. Source: Internet