stopgap

Short definition from Wiktionary

Noun

1. 1
   That which stops up or fills a gap or hole.
2. 2
   Something spoken to fill up an uncomfortable pause in speech; a filled pause or filler.
3. 3
   A short-term fix or temporary measure used until something better can be obtained; that which serves as an expedient in an emergency; a band-aid solution.
4. 4
   A short-term fix or temporary measure used until something better can be obtained; that which serves as an expedient in an emergency; a band-aid solution: A person appointed or hired to fill a position temporarily until a permanent appointment or hire can be made; a temp.

Adjective

1. 1
   Short-term; temporary.
2. 2
   Filling a gap or pause.

Verb

1. 1
   To stop up or fill (a physical gap or hole, or a hiatus).
2. 2
   To use something as a short-term fix or temporary measure until a better alternative can be obtained.
3. 3
   To use something as a short-term fix or temporary measure until a better alternative can be obtained: To work at a position temporarily until a permanent appointment or hire is made.