Hirudo nipponia; medical leech
A specific species of blood-sucking leech used in medical contexts. Often referred to by the more common name チスイビル (血吸蛭).
See also: チスイビル
Hirudo nipponia was once used in bloodletting therapy.
Hirudo nipponia inhabits this pond.
Compound of 医用 (いよう, 'medical use') and 蛭 (ひる, 'leech'), literally 'medical leech'. The reading びる is a rendaku form of ひる.