Используйте «acuminate» в предложении

1. A couched spear of acuminated granite rested by him while at his feet reposed a savage animal of the canine tribe whose stertorous gasps announced that he was sunk in uneasy slumber, a supposition confirmed by hoarse growls and spasmodic movements which his master repressed from time to time by tranquilising blows of a mighty cudgel rudely fashioned out of paleolithic stone