The spider which you are describing, being black and about the size of the palm of your hand in Ohio is likely a wolf spider. They are not aggressive but will bite if provoked. While not lethal to humans, a wolf spider bite will require medical attention as they are poisonous.
The spider that is black with a white crescent on its back is the Brown House Spider. This spider is often confused with the red-back spider.
A Brown and Black spooky spider!
Black widows
A wolf spider venomus but ultimatley not dangerous unless bothered or hunting
A black spotted yellow spider that just ate a gumball.
a black spider
a black widow
Could be the arrowhead spider.
The spider that is black with a white crescent on its back is the Brown House Spider. This spider is often confused with the red-back spider.
A wolf spider
Female Mouse Spider
a garden spider
it is a spider
A Brown and Black spooky spider!
i think it would b a tarantula
Black widows
i saw a spider just like that and i squished it (hehehehe)but i dont know what kind of spider it is.