noun
: a lever on a typewriter that when depressed disengages the line-spacing ratchet to allow writing between lines and when lifted returns the ratchet to place at the original line spacing
noun
: a lever on a typewriter that when depressed disengages the line-spacing ratchet to allow writing between lines and when lifted returns the ratchet to place at the original line spacing
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012