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“The chief developments in Flutes that have taken place during the period under consideration are the popularization of the double length, or "Harmonic," principle,  by Cavaillé-Coll, by William Thynne and others, and the introduction of large scale leather-lipped "Tibias" by”
These user-created lists contain the word ‘leather-lipped’.
List of adjectives such as everduring that do not frequent common speech and writing. A continuation of my list Adjectival Arcana, which had grown to over 7700 words and had become far too cumbersome.
Looking for tweets for leather-lipped.