| 释义 |
WordReference Random House Unabridged Dictionary of American English © 2024plac•er1 (plas′ər),USA pronunciation n. [Mining.]- Mininga surficial mineral deposit formed by the concentration of small particles of heavy minerals, as gold, rutile, or platinum, in gravel or small sands.
- Miningthe site of a form of mining (plac′er min′ing) in which a placer deposit is washed to separate the gold or other valuable minerals.
- Catalan placel, derivative of plaza open place; see plaza
- American Spanish; Spanish: sandbank
- 1835–45, American.
- a person who sets things in their place or arranges them.
- Sporta person or animal that is among the winners of a race or other contest.
Collins Concise English Dictionary © HarperCollins Publishers:: placer /ˈplæsə/ n - surface sediment containing particles of gold or some other valuable mineral
- (in combination): placer-mining
Etymology: 19th Century: from American Spanish: deposit, from Spanish plaza place |