Moogie was a Ferengi term of endearment for mothers and grandmothers.
Quark and Rom often called their mother Ishka "Moogie", though Quark also considered the term infantile. (DS9: "Family Business", et al.) Nog used "Moogie" for his grandmother. (DS9: "The Magnificent Ferengi")
After Rom and Leeta were married in 2373, Nog called his new stepmother "Moogie". Shortly after, Rom told Nog to take his "new Moogie" to the docking ring to evacuate Deep Space 9. (DS9: "Call to Arms")
Also in 2373, Zek told Quark, "Your Moogie and I are getting married." (DS9: "Ferengi Love Songs")