Trims

There are two common uses for the term "Trims" as it relates to audio post production:

In film editing, the trims consist of all of the remaining pieces of exposed film (and companion sound) leftover after the feature has been assembled. A trim can be a deleted scene, an undesired shot, or even a few frames at the head or tail of a shot otherwise used in its entirety. Trims are also commonly referred to as “outs.”

In sound mixing, the trims are the pre-amps in a mixing console. An engineer might "lower the trims" on the inputs of a mixing board if the incoming audio signals are too loud.