Tremulant
Pronunciation : Trem"u*lant, Trem"u*lent
Part of Speech : a.
Definition : Defn: Tremulous; trembling; shaking. [R.] " With tremulent white rod." Carlyle.
Source : Webster's Unabridged Dictionary, 1913
Merriam-Webster's Everyday Language Reference Set: Includes: The Merriam-Webster Dictionary, The Merriam-Webster Thesaurus, and The Merriam-Webster Vocabulary Builder