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.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.