What is the meaning of ?

an area with sides higher than the center: an indentation, a depression, a dip, a divot, a hole

female genitalia, the vagina

a pit, a hollow, a cavity, a depression, a dent

a sunken center

a place or object with a sunken center

a pit, a hollow, a cavity, a depression, a dent

a mistake, and error

a moment of weakness or confusion, being at a loss

an indentation, a dip or divot, a hollow, a dent in a surface

Source: wiktionary.org