one old.one old lady told them she'd just been to the post o

one old.
one old lady told them she'd just been to the post office to draw her pension when he called.she said he must have followed her home.he stole the whole lot.
为什么是“draw” her pension?是短语吗?
还有：he stole the whole lot里的lot是钱的意思吗?可是lot没有钱的意思啊.