['wentlˏtræp]
n.
[动]梯螺

Wentletrap \Wen"tle*trap`\, n. [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}.

Scalaria \Sca*la"ri*a\, n. [L., flight of steps.] (Zo["o]l.)
Any one of numerous species of marine gastropods of the genus
{Scalaria}, or family {Scalarid[ae]}, having elongated spiral
turreted shells, with rounded whorls, usually crossed by ribs
or varices. The color is generally white or pale. Called also
{ladder shell}, and {wentletrap}. See {Ptenoglossa}, and
{Wentletrap}.