1. A game at cards.

2. To beat at the game by winning every trick.

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

• loors,
• ploor,
• floo,
• lor,
• lookk,
• blooy,
• loog,
• flooe,
• los,
• noo,
• heloo,
• llo,
• lol,
• lmao,
• loc,
• looki,
• loock,
• hoo,
• looby,
• voo

• logo,
• Lo,
• Lou,
• loot,
• L,
• goo,
• Loy,
• zoo,
• Lowe,
• look,
• loewi,
• LOH,
• loom,
• Loew,
• boo,
• moo,
• low,
• Louie,
• zoo-,
• log,
• loewe,
• loop,
• LOE,
• loya,
• loon,
• too,
• lot,
• lowy.

The adjective form of the word "loo" is "loose".

The plural of the "loo" can be the "loos".

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