sub-bass
Sub"-bass`, n. (Mus.) Defn: The deepest pedal stop, or the lowest tones of an organ; the fundamental or ground bass. [Written also sub-base.] Ayliffe.
Sub"-bass`, n. (Mus.) Defn: The deepest pedal stop, or the lowest tones of an organ; the fundamental or ground bass. [Written also sub-base.] Ayliffe.