Pons-Collins:
stock - ... 2: (adj attr) (Comm, fig) Standard-;
stock size - Standardgröße;
stock response - Standardantwort
stock character - (Theat) Typ m (im Rollenfach)
Oxford-Duden:
stock - ... 3: (attrib. adj.) a: (Commerc.) vorrätig;
a stock size/model - eine Standardgröße/ein Standardmodell; b: (fig.: trite, unoriginal) abgedroschen (ugs.);
stock character - Standardrolle, die
NOAD:
(adj.) [attrib.] 1: (of a product or type of product) usually kept in stock and thus regularly available for sale:
25 percent off stock items.2: (of a phrase or expression) so regularly used as to be automatic or hackneyed:
their stock response to the refugee crisis was "We can't take everyone." denoting a conventional character type or situation that recurs in a particular genre of literature, theater, or film:
the stock characters in every cowboy movie. denoting or relating to cinematic footage that can be regularly used in different productions, typically that of outdoor scenes used to add realism to a production shot in an indoor set.
Chambers:
stock - (adj) 1 being of a standard type, size, etc, constantly in demand and always kept in stock. 2 said of a phrase, etc: much used, especially so over-used as to be meaningless.
http://www.chambersharrap.co.uk/chambers/feat...Random House unabridged:
stock - ... adj. 49. kept regularly on hand, as for use or sale; staple; standard:
stock articles. ... 51. of the common or ordinary type; in common use:
a stock argument. 52. banal; commonplace:
a stock remark. ... 55. [Theat.] ... d. being a character type fixed by convention, as in the commedia dell' arte, a harlequinade, minstrel show, or the like.
stock footage - [Motion Pictures, Television.] film containing stock shots.
stock shot - [Motion Pictures, Television.] a film clip, as from a newsreel or travelogue, kept and used as an insert or background shot for other motion pictures.
