sanguisuge
A leech (blood-sucking annelid).
obsolete, rare
And mighty sanguisuge, The Pope that is so huge, Is ever ther refuge;
For that blody judge
Where it comes from
From Middle English sanguisuge, from Latin sanguisuga, from sanguis (“blood”) + sugere (“to suck”).
Adapted from the Wiktionary entry sanguisuge (CC BY-SA 4.0).