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Webster 1913 Edition
Wentletrap
Wen′tle-trapˊ
,Noun.
[D.
wenteltrap
a winding staircase; cf. G. wendeltreppe
.] [Obs.]
Any one of numerous species of elegant, usually white, marine shells of the genus Scalaria, especially
Scalaria pretiosa
, which was formerly highly valued; – called also staircase shell
. See Scalaria
.