Skim, as milk

• Get the grease out of
• Make more suitable for dieters
• Make lean, in a way
• Prepare meat in a health-conscious way
• Trim, in a way
• Make leaner
• Trim to make leaner, as a steak
• Prepare, as chicken stock

Wiktionary Word definitions in Wiktionary
vb. To remove fat from a material, especially by the use of solvents