Adjective sea level has 1 sense
  1. low-lying, sea-level - lying below the normal level; "a low-lying desert"
    Antonyms: upland, highland (indirect, via lowland)
,Noun sea level has 1 sense
  1. sea level - level of the ocean's surface (especially that halfway between mean high and low tide); used as a standard in reckoning land elevation or sea depth
    --1 is a kind of
    water level
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