n.
螺旋梯

Cockle \Coc"kle\ (k[o^]k"k'l), n. [OE. cockes cockles, AS.
s[=ae]coccas sea cockles, prob, from Celtic; cf. W. cocs
cockles, Gael. cochull husk. Perh. influenced by F. coquille
shell, a dim. from the root of E. conch. Cf. {Coach}.]
1. (Zo["o]l.) A bivalve mollusk, with radiating ribs, of the
genus {Cardium}, especially {Cardium edule}, used in
Europe for food; -- sometimes applied to similar shells of
other genera.

2. A cockleshell.

3. The mineral black tourmaline or schorl; -- so called by
the Cornish miners. --Raymond.

4. The fire chamber of a furnace. [Eng.] --Knight.

5. A hop-drying kiln; an oast. --Knight.

6. The dome of a heating furnace. --Knight.

{Cockle hat}, a hat ornamented with a cockleshell, the badge
of a pilgrim. --Shak.

{Cockle stairs}, winding or spiral stairs.