Definitions:

1. In computing context, refers to extra characters or bytes to align data or fill spaces in memory or formating. NOUN
   • The program added zero padding to meet the block size.
2. Soft filler used inside clothing, furniture, packaging, or gear, for cushioning or protection. NOUN
   • The jacket has extra padding to keep you warm.
3. Superfluous words or content used to inflate writing, speech, or data. NOUN
   • The essay was full of padding to meet the word count.

Synonyms:

• cushioning
• filler
• lining
• redundancy
• stuffing
• wordiness