escolar - school (as an adjective), having to...
  el maremoto - tidal wave, tsunami
  lucido - splendid, magnificent, marvelous
  el petirrojo - robin
  el planeador - glider
  la pecera - fish tank, fish bowl
  atrayente - attractive
  el ruego - request
  la pupila - pupil (of the eye)
  abajo - down, below, downward, downstairs
  el bicho - animal, beast, bug (insect), pesky child
  el dorso - back side of something, back
  güero - blond, blonde, golden-colored
  el grupo - group, cluster, set (of items),...
  la plaga - the plague, epidemic, blight, curse,...
  el reino - kingdom, realm
  la riada - flood (literal or figurative)
  la deuda - debt
  luego - next, later, soon, then
  la ostra - oyster