1. A cry to call attention; a hunting cry.

2. An exclamation to invite attention or to urge on.

3. To cry halloo.

4. To encourage or chase with shouts; to call or shout to.

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

• hallf,
• hlleo,
• alloow,
• halow,
• heloo,
• halll,
• hrllo,
• hellooo,
• helllo,
• helloy,
• hallal,
• hally,
• helloa,
• shallo,
• hellow,
• hllo,
• hillo,
• helooo,
• helloi,
• hwllo

• halley,
• Hailey,
• hail,
• hall,
• haul,
• Hawley,
• hallah,
• halloway,
• hale,
• hello,
• Haile,
• Hal,
• hollow,
• Hayley,
• hallow,
• Hally,
• halo,
• Hallee,
• halle,
• haley,
• Hallie.

The adverb form of "halloo" is "hallooingly".

The adjective form of the word "halloo" is "hallooing".

The plural of the "halloo" can be the "halloos".

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