turn over

1.  Invert, bring the bottom to the top, as in We have to turn over the soil before we plant anything. [Second half of 1300s]
2.  Shift position, as by rolling from side to side. For example, This bed is so narrow I can barely turn over. [First half of 1700s]
3.  Rotate, cycle, as in The engine turned over but the car wouldn't start. [Early 1900s]
4.  Think about, consider, as in She turned over the idea in her mind. [Early 1800s]
5.  Transfer to another, surrender, as in I turned over the funds to the children. [Mid-1500s]
6.  Do business to the extent or amount of, as in We hoped the company would turn over a million dollars the first year. [Mid-1800s]
7.  Seem to lurch or heave convulsively, as in The plane hit an air pocket and my stomach turned over. [Second half of 1800s]
8.  Replace or renew the constituent parts, as in Half of our staff turns over every few years. [Mid-1900s] Also see turn over a new leaf.

Definition: give, transfer
Antonyms: receive, take

v

Definition: think about seriously
Antonyms: ignore

The verb has 9 meanings:

Meaning #1: place into the hands or custody of
  Synonyms: pass, hand, reach, pass on, give

Meaning #2: cause to overturn from an upright or normal position
  Synonyms: overturn, tip over, upset, knock over, bowl over

Meaning #3: to rotate or cause to rotate
  Synonyms: roll, revolve

Meaning #4: turn up, loosen, or remove earth
  Synonyms: dig, delve, cut into

Meaning #5: do business worth a certain amount of money

Meaning #6: cause to move around a center so as to show another side of
  Synonym: turn

Meaning #7: turn from an upright or normal position
  Synonyms: overturn, tip over

Meaning #8: turn upside down, or throw so as to reverse
  Synonyms: flip, flip over

Meaning #9: think about carefully; weigh
  Synonyms: consider, debate, moot, deliberate