1. A loud call.

2. Attend here.

3. To call out loudly to any one at a distance.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• hollar,
• hallo,
• holo,
• holly,
• gollo,
• nollo,
• jollo,
• uollo,
• yollo,
• hkllo,
• hlllo,
• hpllo,
• h0llo,
• h9llo,
• hoklo,
• hoplo,
• hoolo,
• hollow,
• hollu,
• Holloh

• Holli,
• hoyle,
• hole,
• holey,
• hohl,
• howl,
• holloa,
• Howell,
• holla,
• Holloway,
• howley,
• houle,
• Holaway,
• holly,
• HOLL,
• Hollie,
• hoel,
• hooley,
• holy,
• Holley,
• Holle,
• Howle,
• hollow.

The adverb form of "hollo" is "holloingly".

The adjective form of "hollo" is "hollow".

The plural of the "hollo" can be the "hollos".

The singular of the "hollo" can be the "hollo".