Often observed flicking its tongue, snakes use their forked tongue to smell the air. Snakes are ectotherms, meaning they must regulate their body temperature externally by sunning themselves or retreating to cool, shaded areas. Snakes hibernate during the winter. Snakes must shed their skin three to six times per year.
vanity noun [U]. âº the âpersonal âcharacteristic of being too âproud of and âinterested in yourself, esp. in âyour âappearance or âachievements. (Definition of vanity from the Cambridge Academic Content Dictionary Â© Cambridge University Press). See all translations.
Vanity is used here in the literal sense emptiness: all the goods sold here are things of no value to a Christian. Pilgrim's Progress was enormously popular well into the 20th century, and Vanity Fair is widely used to refer to the seductiveness of worldly things, particularly the fashions and recreations of the rich.