singleton [
'siŋgltәn]
n. 一个, 独生子, 独身
singleton[ noun ]- a single object (as distinguished from a pair)
<noun.quantity>
- a set containing a single member
<noun.group>
- the playing card that is the only card in a suit held in a bridge hand as initially dealt
<noun.artifact>
Singleton \Sin"gle*ton\, n.
In certain games at cards, as whist, a single card of any
suit held at the deal by a player; as, to lead a singleton.