the measurement or extent of something from end to end; the greater of two or the greatest of three dimensions of an object

the delta is twenty kilometres in length

the fish reaches a length of 10 inches

the amount of time occupied by something

delivery must be within a reasonable length of time

a piece or stretch of something

a length of brown satin

the surviving length of track

an extreme to which a course of action is taken

they go to great lengths to avoid the press

the distance from the batter at which a well-bowled ball pitches

Lewis tended to bowl short of a length

(in bridge or whist) the number of cards of a suit held in one's hand, especially when five or more

to open one heart with equal length in hearts and spades is in the modern Acol style