The Collaborative International Dictionary
Hurlbat
Hurlbat \Hurl"bat`\, n.
See Whirlbat. [Obs.]
--Holland.
Wiktionary
hurlbat
n. A lightweight medieval throwing-axe
Wikipedia
Hurlbat
A hurlbat (or whirlbat, whorlbat) is a weapon of unclear original definition. Older reference works refer to it largely as a type of club, either held in the hand or possibly thrown. Modern usage appears to refer to a type of throwing-axe.