enchiridion or encheiridion /en(g)-kī-ridˈi-on/

A handbook or a manual

• gas lift
• gas lifts
• gaslight
• gaslights
• gas-lime
• gas-liquor
• gaslit
• gas main
• gas mains
• gasman
• gas mantle
• gas mantles
• gas mask
• gas masks
• gasmen
• gas meter
• gas meters
• gas-motor
• gas-motors
• gasogene
• gasogenes
• gasohol
• gasohols
• gas oil
• gas oils