195 P. 378 | Or. | 1921
“The terms of a writing are presumed to have been used in their primary and general acceptation, but evidence is nevertheless admissible that they have a technical, local, or otherwise peculiar signification, and were so used and understood in the particular instance, in which case the agreement shall be construed accordingly.”
It is one thing, however, to define the words used in a contract, and quite another to undertake to vary the contract by custom. In the latter case it is necessary that the custom be pleaded. The rule is thus stated in 17 C. J. 516:
“Particular customs or usages relating to a particular locality or trade must, however, according to the general rule, be pleaded by the party seeking to make them a basis of recovery or defense, and cannot in the latter case be shown under a general issue or denial. So also a custom introduced as an affirmative defense or for the purpose of recoupment, it seems, should be specially pleaded. Evidence of a custom or usage which may properly be resorted to as an aid to the interpretation of a contract sued on may, according to some authorities, be admitted for such purpose, although it is local or particular and not specially pleaded; but under the guise of interpretation a trade or local custom or usage which has not been pleaded cannot be admitted to defeat a contract or to vary its express terms, and local commercial usages must be pleaded; and so of a custom to excuse the nonperformance of a duty prescribed by law.”