Adapted or intended to be carried in the pocket, as pocket calculator, pocket flask, pocket watch, etc.

Of such value, beauty, or size, as to be fitted for a private chamber, or kept in a cabinet. Sometimes more or less technical, as in cabinet edition…

That may be put or carried in a pocket.

= pocket-sized adj.

a pocket in a vest (sense 3b); also attributive as adj.: small enough to fit into a vest pocket, very small of its kind; also figurative.

of fit size for placing in a cabinet; (a photograph) of the size larger than a carte-de-visite.

As a modifier, designating devices small or compact enough to be fitted into a suitcase, usually in connection with secret or criminal activities, as…