Meaning of LOWER in English
■ adjective comparative of low 1 .
1》 less high in position, status, or amount.
↘(often Lower ) Geology & Archaeology denoting an older (and hence typically deeper) part of a stratigraphic or archaeological division: the Lower Cretaceous.
2》 [in place names ] situated to the south.
■ adverb in or into a ~ position.
1》 cause to move downward.
2》 make or become less in amount, extent, or value.
↘( ~ oneself ) demean oneself.
■ verb &noun variant spelling of lour .
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004