Regulo® /regˈū-lō/

1. A thermostatic control system for gas ovens
2. Loosely (with a given numeral) one of the graded scale of temperatures on a gas oven (also without cap)

• songfest
• song form
• song forms
• songful
• songfully
• songfulness
• songfulnesses
• songless
• songlike
• songman
• songmen
• Song of Solomon
• Song of Songs
• songs
• song school
• song schools
• songsmith
• songsmiths
• Songs of ascents
• Songs of degrees
• song sparrow
• song sparrows
• songster
• songsters
• songstress