Deeper Dive: inside

inside preposition or adverb Within the sides of; in the interior; contained within; as, inside a house, book, bottle, etc.

In′sideˊ adjective

1. Being within; included or inclosed in anything; contained; interior; internal; as, the inside passengers of a stagecoach; inside decoration.
Kissing with inside lip. Shak.
2. Adapted to the interior.

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.
In′sideˊ noun

1. The part within; interior or internal portion; content.
Looked he o’ the inside of the paper? Shak.
2. pl. The inward parts; entrails; bowels; hence, that which is within; private thoughts and feelings.
Here's none but friends; we may speak
Our insides freely. Massinger.
3. An inside passenger of a coach or carriage, as distinguished from one upon the outside. [Colloq. Eng.]
So down thy hill, romantic Ashbourne, glides
The Derby dilly, carrying three insides. Anti-Jacobin.
Patent insides


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.

-- Webster's unabridged 1913

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