(rare) That which stops up or fills a gap or hole.

A temporary solution or person appointed temporarily until a permanent solution or appointment can be made.

(transitive) To stop up or fill (a physical gap or hole, or a hiatus).

Use something as a temporary solution until a better alternative is available, specifically referring to temporarily working in a position until a permanent hire is made.

Short-term; temporary.

Filling a gap or pause. (Can we add an example for this sense?)