Longman Dictionary of Contemporary English
The Collaborative International Dictionary
Billy goat \Bil"ly goat`\ A male goat. [Colloq.]
Wiktionary
alt. A male goat. n. A male goat.
WordNet
Wikipedia
Billy Goat was a band playing rock, funk and Latin styles from 1989 to 1997. Originating in Denton, Texas, Billy Goat was popular in the Dallas and Austin scenes including Deep Ellum and became known for its wild stage antics. One published reason for disbanding was turmoil caused from a tour van crash. Putting music ahead of antics, the band reformed with a new line-up in Kansas City prior to the 1995 release, Black and White. The more recent project of Dillon, Go-Go Jungle, has ties to Billy Goat's second incarnation including band members Go-Go Ray and J.J. Richards.
Usage examples of "billy goat".
The first was that of a white billy goat, its head stained red with blood.
That mad billy goat was only in the adjoining field and suppose he found a weak part in the straggling hedge.
He tied a rope round the billy goat's neck, and affixed this loosely to the mare's saddle, but left the nannies loose.
However many times Jake re-drew Sailor, he still looked like an old Billy goat.
Billy followed close behind me and Dobby brought up the rear, white whiskers bristling like an excited billy goat.
He had a horn for a nose, a lion's mane, pig eyes, donkey ears and billy goat whiskers.
I'm well aware that I whiff like an old billy goat in very short order myself.