prep. or adv. Within the sides of; in the interior; contained within; as, inside a house, book, bottle, etc. [ 1913 Webster ]

a. 1. Being within; included or inclosed in anything; contained; interior; internal; as, the inside passengers of a stagecoach; inside decoration. [ 1913 Webster ]

Kissing with inside lip. Shak. [ 1913 Webster ]

2. Adapted to the interior. [ 1913 Webster ]

Inside callipers (Mech.), callipers for measuring the diameters of holes, etc. --
Inside finish (Arch.), a general term for the final work in any building necessary for its completion, but other than unusual decoration; thus, in joiner work, the doors and windows, inside shutters, door and window trimmings, paneled jams, baseboards, and sometimes flooring and stairs; in plaster work, the finishing coat, the cornices, centerpieces, etc., ; in painting, all simple painting of woodwork and plastering. --
Inside track, the inner part of a race course; hence, colloquially, advantage of place, facilities, contacts, etc., in competition. [ 1913 Webster ]

n. 1. The part within; interior or internal portion; content. [ 1913 Webster ]

Looked he o' the inside of the paper? Shak. [ 1913 Webster ]

2. pl. The inward parts; entrails; bowels; hence, that which is within; private thoughts and feelings. [ 1913 Webster ]

Here's none but friends; we may speak
Our insides freely. Massinger. [ 1913 Webster ]

3. An inside passenger of a coach or carriage, as distinguished from one upon the outside. [ Colloq. Eng. ] [ 1913 Webster ]

So down thy hill, romantic Ashbourne, glides
The Derby dilly, carrying three insides. Anti-Jacobin. [ 1913 Webster ]

Patent insides or
Patent outsides, a name give to newspaper sheets printed on one side with general and miscellaneous matter, and furnished wholesale to offices of small newspapers, where the blank pages are filled up with recent and local news. [ 1913 Webster ]

n. an officer of a corporation or others who have access to private information about the corporation's operations, especially information relating to profitability. An insider is forbidden by U. S. securities laws to trade stock in publicly owned corporations based on the private information. The definition of insider for the purpose of securities law has changed in the late 29th century to become more inclusive, whereas it initially was applied only to officers of a corporation. [ WordNet 1.5 +PJC ]