The state of being insane; madness.

Exhibiting unsoundness or disorder of mind; not sane; utterly mad. / Used by or relating to insane people. / Causing insanity or madness.

Unable to be separated; bound together permanently.

Something that cannot be separated from something else.

(cricket) The edge of a bat closest to the body of the batsman. / (cricket) A deflection of a ball off of the inside edge of a bat, sometimes to the wicket keeper for a catch.

(cricket) To hit the ball with the inside edge of the bat. / (skating) To place one's weight on the inside edge of the skate, thereby moving in a curve in that direction.

(not comparable) With the inside surface turned to be on the outside. / (of knowledge) Thoroughly; extremely well. / (of characteristic existence) Completely; through and through; to the core.

Alternative form of inside-out.

(transitive) To put in between or into.

An image inserted into text. / A promotional or instructive leaflet inserted into a magazine, newspaper, tape or disk package, etc. / A mechanical component inserted into another.