Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps

Noun: drilling mud  dri-ling múd
  1. A mixture of clays and chemicals and water; pumped down the drill pipe to lubricate and cool the drilling bit and to flush out the cuttings and to strengthen the sides of the hole
    - drilling fluid

Type of: lube, lubricant, lubricating substance, lubricator

Encyclopedia: Drilling mud