late 14c., from astrology + -er (1). Drove out French import astrologein, which, had it survived, probably would have yielded *astrologian, as in Chaucer's "The wise Astrologen." Earliest recorded reference is to roosters as announcers of sunrise.
1. Anyone can be an astrologer as long as they are mathematically minded.
2. The astrologer claimed to be able to divine the future.
3. Allow your astrologer to provide you with regular counseling and coaching.
4. I was told by an astrologer that I should teach.
5. You should go to an astrologer to have your horoscope read.