Hmm. "Especially" pops up so suspiciously frequently in dictionaries that one can't help thinking that it's no more than a utilitarian word, lacking nuance, very handy because it saves the compiler the trouble of explaining shades of definitions so fully that the tome would end up being twice as thick. It also exonerates them from criticism from pedants in a way that using "usually," "normally" or "mostly" wouldn't. It also carries the implication that using the word in any sense other than the "especially" sense would be capricious. For example, if I called a chap I saw kneeling to pray in a cathedral I happened to be visiting (and I visit many) a "religionist," you'd think I'd gone mad, though there's no doubt that he's a believer. Yet "especially" allows me to call him just that, given your interpretation of it. Even with dictionaries you have to read between the lines.