Assertion: spell | /r/CapableOf | ensure regularity
Facets:
value: in the height
type: OTHER
Source sentences:
text: Originally the ball was thrown into the air by striking a lever upon which it rested in the spell or trap, but in the later development of the game a spell or trap furnished with a spring was introduced, thus ensuring regularity in the height to which the knurr is tossed, somewhat after the manner of the shooter's clay pigeon.