Englishfor English speakers
required
—
adjective
(= needful)
necessary for relief or supply
provided them with all things needful
—
adjective
(= compulsory, mandatory)
required by rule
in most schools physical education is compulsory
attendance is mandatory
required reading
height
Noun
—
The distance of something from the bottom of it to the top; how tall something is.
—
The highest part of something.
of
Preposition
—
Made using.
It is a house of cards.
groundwater
noun
—
Water existing beneath the earth's surface in underground streams and aquifers
level
Adjective
—
Even, flat, straight, smooth, horizontal. Having all parts equally as high as all other parts.
This table is not level: things are rolling off it.
level
Noun
—
A level is a place that is higher or lower than some other places.
The room you want is on the third level of this building.
—
A tool for finding out whether a surface is level.