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That which properly belongs to an art.

In the construction of contracts, it is a general rule that technical words are to be taken according to their approved and known use in the trade in which the contract is entered into, or to which it relates, unless they have manifestly been understood in another sense by the parties. 2 B. & P. 164; 6 T. R. 320; 3 Stark. Ev. 1036, and the article Construction.

Words which do not of themselves denote that they are, used in a technical sense, are to have their plain, popular, obvious and natural meaning. 6 Watts & Serg. 114.

The law, like other professions, has a technical language. "When a mechanic speaks to me of the instruments aud operations of his trade,", says Mr. Wynne, Eunom. Dial. 2, s. 5, "I shall be as unlikely to comprehend him, as he would me in the language of my profession, though we both of us spoke English all the while. Is it wonderful then, if in systems of law, and especially among the hasty recruits of commentators, you meet (to use Lord Coke's expression) with a whole army of words that cannot defend themselves in a grammatical war? Technical language, in all cases, is formed from the most intimate knowledge of any art. One words stands for a great many, as it is. always to be resolved into many ideas by definitions. It is, therefore, unintelligible, because it is concise, and it is useful for the same reason." Vide Language.