The Collaborative International Dictionary of English v.0.48:
Tumulate \Tu"mu*late\, v. t. [L. tumulatus, p. p. of tumulare to tumulate. See Tumulus.] To cover, as a corpse, with a mound or tomb; to bury. [Obs.] [1913 Webster]The Collaborative International Dictionary of English v.0.48:
Tumulate \Tu"mu*late\, v. i. To swell. [Obs.] --Wilkins. [1913 Webster]