1. (noun) a pillow that is often put across a bed underneath the regular pillows

• long pillow

2. (verb) support and strengthen

• bolster up

3. (verb) add padding to

• pad

1. (noun) a pillow that is often put across a bed underneath the regular pillows

• pillow

2. (verb) support and strengthen

• reenforce
• reinforce

3. (verb) prop up with a pillow or bolster

• prop
• prop up
• shore
• shore up

4. (verb) add padding to

• fill
• fill up
• make full

1. (verb) prop up with a pillow or bolster

• long pillow

2. (verb) add padding to

• cushioning
• padding
• pad