cast

If x casts light or shadow on y, x causes y to be lit or in shadow.

Example: The street light outside my window cast shadows on the wall.

If you cast light on an idea or problem, you make it clearer by giving more information about it.

Example: Our research casts new light on the connection between temperature and plant growth.

If you cast doubt on something, you make make people less likely to believe it.

Example: The video casts doubt on the story told by police.

If you cast a look, glance, you look quickly.

Example: She cast about for her pen.

If you cast a vote, you vote in an election.

Example: I've decided to cast my vote for the Democratic Party.