Translation

ヒル / 人にたかる人 / 吸い取る人

Meaning

A leech is a bloodsucking worm-like animal. Figuratively, it means a person who takes money, help, or energy from others without giving anything back. Do not confuse it with leach, which means substances seep or wash out of materials.

Examples

• 彼は友人にお金を頼ってばかりで、まるで寄生する人のようでした。
  He kept relying on his friends for money and acted like a leech.
• 昔はヒルが医療に使われることがありました。
  Leeches were once used in medicine.