hunt's-up

from The Century Dictionary.

• noun The tune or call formerly played on the horn under the windows of sportsmen to awaken them; hence, in literature, something calculated to arouse.

from the GNU version of the Collaborative International Dictionary of English.

• noun obsolete A tune played on the horn very early in the morning to call out the hunters; hence, any arousing sound or call.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun obsolete A tune played on the horn very early in the morning to call out the hunters; hence, any rousing sound or call.