level

1 level /ˈlɛvəl/ noun
plural levels
1 level
/ˈlɛvəl/
noun
plural levels
Britannica Dictionary definition of LEVEL
1 
a  : a specific height
[noncount]
[count]
— see also ground-level, sea level
b  [count] : a part of a building that is at a specific height
— see also split-level
2 
[count] : an amount of something
3 
[count] : a position or rank in a scale : a position that is high or low when compared to others
— see also entry-level, high-level, low-level
4 
[count] : a way of thinking about, talking about, or dealing with something
5 
[count] : a device used to see when something is exactly flat
— called also spirit level
— see picture at carpentry

descend/sink/stoop to someone's level

: to behave as badly as someone who has treated you wrongly

on the level

informal
: not false or dishonest
2 level /ˈlɛvəl/ adjective
2 level
/ˈlɛvəl/
adjective
Britannica Dictionary definition of LEVEL
1 
: having a flat or even surface
2 
: not going up or down
3 
a  : having the same height as something else — usually + with
b  : not in front of or behind something or someone else — often + with
4 
chiefly British : having the same position, score, or rank : even
— compare level-pegging
5 
: steady and calm

your level best

: your best effort at doing something
3 level /ˈlɛvəl/ verb
levels US leveled or chiefly British levelled US leveling or chiefly British levelling
3 level
/ˈlɛvəl/
verb
levels US leveled or chiefly British levelled US leveling or chiefly British levelling
Britannica Dictionary definition of LEVEL
[+ object]
1 
: to make (something) flat or level
2 
: to knock (someone or something) down to the ground
3 
a  : to point (a weapon) at someone
b  : to direct (something, such as criticism) at or against someone
4 
chiefly British : to make (a score) equal : tie

level off

[phrasal verb]
1 
: to stop going up or down
2 
level (something) off or level off (something) : to make (something) flat or even

level out

[phrasal verb]
: to stop going up or down

level the playing field

: to make a situation fair for everyone
— see also level playing field

level with

[phrasal verb]
level with (someone) informal
: to speak honestly to (someone)