['plezәntri]
n.
幽默, 开玩笑

[ noun ]
an agreeable or amusing remark
<noun.act>
they exchange pleasantries

Pleasantry \Pleas"ant*ry\, n.; pl. {Pleasantries}. [F.
plaisanterie. See {Pleasant}.]
That which denotes or promotes pleasure or good humor;
cheerfulness; gayety; merriment; especially, an agreeable
playfulness in conversation; a jocose or humorous remark;
badinage.

The grave abound in pleasantries, the dull in repartees
and points of wit. --Addison.

The keen observation and ironical pleasantry of a
finished man of the world. --Macaulay.