"trees cast long shadows"

• partial or complete darkness, especially as produced by a body coming between rays of light and a surface

  "the north side of the cathedral was deep in shadow"

• the shaded part of a picture
• a dark patch or area on a surface

  "her face was pale and there were shadows under her eyes"

• a region of opacity on a radiograph

  "shadows on his lungs"

"the shadow of war fell across Europe"

• used in reference to something insubstantial or fleeting

  "a freedom that was more shadow than substance"

• used in reference to a position of relative inferiority or obscurity

  "he lived in the shadow of his father"

• the slightest trace of something

  "she knew without a shadow of a doubt that he was lying"

• a weak or inferior remnant or version of something

  "this fine-looking, commanding man had become a shadow of his former self"

• an expression of perplexity or sadness

  "a shadow crossed Maria's face"

"her faithful shadow, a Yorkshire terrier called Heathcliffe"

• a person secretly following and observing another

  "no matter where Johnson went, his shadow stayed with him"

• a person that accompanies someone in their daily activities at work in order to gain experience at or insight into a job
• the opposition counterpart of a government minister or ministry

  "the shadow Chancellor"

"the market is shadowed by St Margaret's church"

"he had been up all night shadowing a team of poachers"

• (of an opposition politician) be the counterpart of (a government minister or a ministry)

  "he formerly helped to shadow the Foreign Office"

• accompany (someone) in their daily activities at work in order to gain experience at or insight into a job

  "the placement might involve shadowing a manager"