Il*lapse" (?), v. i. [imp. & p. p. Illapsed (?); p. pr. & vb. n. Illapsing.] [L. illapsus, p.p. of illabi; pref. il- in + labi to fall, slide.]
To fall or glide; to pass; -- usually followed by into.
Cheyne.
© Webster 1913.
Il*lapse", n. [L. illapsus. See Illapse, v. i.]
A gliding in; an immisson or entrance of one thing into another; also, a sudden descent or attack.
Akenside.
They sit silent . . . waiting for an illapse of the spirit.
Jeffrey.
© Webster 1913.