(Fifth Bisiness by Robertson Davis)My troubles became no less when, at least four months after Paul’s birth, I heard this coming up the stovepipe—cooler now, for spring was well advanced:
“I think little Paul is going to pull through. He’ll be slow, the doctor says, but he’ll be all right.”
“You must be pleased. It’s mostly your doing.”
Hi, all. Could you tell me what "He'll be slow" means in here. I wasn't sure whether this means he will be intellectually handicapped, or slow in something else.
Thanks for your help.