reinforcement

noun

1. 1

   a military operation (often involving new supplies of men and materiel) to strengthen a military force or aid in the performance of its mission

   they called for artillery support

2. 2

   an act performed to strengthen approved behavior

3. 3

   a device designed to provide additional strength

   the cardboard backing was just a strengthener

   he used gummed reinforcements to hold the page in his notebook

4. 4

   (psychology) a stimulus that strengthens or weakens the behavior that produced it

5. 5

   information that makes more forcible or convincing

   his gestures provided eloquent reinforcement for his complaints