used to express a range of emotions including surprise, anger, disappointment, or joy, or when reacting to a remark
‘Oh no,’ said Daisy, appalled
Me? Oh, I'm fine
oh, shut up
Ohio (in official postal use).
a person's wife, husband, or partner (particularly used in online forums)
I often go to gigs on my own as my OH doesn't have the same musical tastes as me
the fifteenth letter of the alphabet.
nought or zero (in a sequence of numerals, especially when spoken)
two seven o seven point six
a shape like that of a capital O; a circle
he made an O with his mouth