Defn: To thrust away. [Obs.] Johnson.

ABSTRUSE
Ab*struse", a. Etym: [L. abstrusus, p. p. of abstrudere to thrust
away, conceal; ab, abs + trudere to thrust; cf. F. abstrus. See
Threat.]

1. Concealed or hidden out of the way. [Obs.] The eternal eye whose sight discerns Abstrusest thoughts. Milton.

2. Remote from apprehension; difficult to be comprehended or understood; recondite; as, abstruse learning. Profound and abstruse topics. Milman.

ABSTRUSELY
Ab*struse"ly, adv.

Defn: In an abstruse manner.

ABSTRUSENESS
Ab*struse"ness, n.

Defn: The quality of being abstruse; difficulty of apprehension.
Boyle.

ABSTRUSION
Ab*stru"sion, n. Etym: [L. abstrusio. See Abstruse.]

Defn: The act of thrusting away. [R.] Ogilvie.