Delapse \De*lapse"\, v. i. [imp. & p. p. {Delapsed}; p. pr. & vb. n. {Delapsing}.] [L. delapsus, p. p. of delabi to fall down; de- + labi to fall or side.] To pass down by inheritance; to lapse. [Obs.] Which Anne derived alone the right, before all other, Of the delapsed crown from Philip. --Drayton.