From WordNet (r) 3.0 (2006):
dowse
n 1: searching for underground water or minerals by using a
dowsing rod [syn: dowse, dowsing, rhabdomancy]
v 1: wet thoroughly [syn: douse, dowse]
2: use a divining rod in search of underground water or metal
3: slacken; "douse a rope" [syn: douse, dowse]
4: cover with liquid; pour liquid onto; "souse water on his hot
face" [syn: drench, douse, dowse, soak, sop,
souse]