Alternative form of inside-out.

(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.

(idiomatic) A joke that is understood or meant to be understood only by certain people who are aware of the details.

(US) Within the portions of Washington D.C., Maryland and Virginia encircled by Interstate 495. (The Washington Beltway)

Alternative form of inside baseball

(slang) Anything built into dice for the purpose of loading them and cheating at games.

A newspaper like a patent outside but printed only on the inside.

(business, sales) A sales representative employed by a retail or wholesale vendor who works on the premises of his or her employer, transacting with customers directly on a sales floor or by telephone, online messaging, etc.

Alternative form of indoor voice

(rugby) a back whose primary job is to create space for the outside backs outside him, i.e. the scrum-half, the fly-half and the inside centre.