noun
plural lengths
the distance from one end of something to the other end :a measurement of how long something is [noncount]
[noncount] :the size or extent of a piece of writing
[noncount] :the quality or state of being long
[noncount] :the amount of time something lasts
[count] :the length of something used as a unit of measure
[count] :a piece of something that is long and thin or narrow
[noncount] :a measure of how far down on your body something (such as your hair or a piece of clothing) reaches
at length
for a long time
in a full or complete way
literary :after a long time
go to any length
or go to any/extreme/great (etc.) lengths
to make a great or extreme effort to do something
the length and breadth of
through all parts of (a place)