A 'crawlleague' is a co-worker or colleague whose lack of self-respect and character forces them to spend much of their working life, and their sad, sad social life on their knees.
Employee #1: Wow, that guy seems to be a rising star in your firm. Every time I visit your office he's hanging on your bosses' every word and staring at him with those big doe eyes.
Employee #2: Yeah, my 'crawlleague' is a real tool alright.
n. That guy at work who goes from cubicle to cubicle telling everybody in your office the exact same thing, usually some lame story about what he did last weekend. The cube crawler is also the same guy who feels it necessary to touch your computer screen at least eight times a day.