tap/faucet, crane [noun] [de kraan, de kranen]
1. "Warm(/koud)waterkraan": warm/cold water tap/faucet.
2. "Kraanwater": tap water.
In Dutch bars and restaurants they will always try to sell you the overpriced mineral water in the small blue labeled bottles (often referred to by the popular brand name "Spa blauw"), but you can ask for "kraanwater". They might not give it to you though and yes, Dutch people too, think this is highly annoying.
To order mineral water with gas, ask for "Spa rood", which comes in a bottle with a red label.
3. "Kraanwagen": a truck with a crane.