1. A male horse, not castrated.

2. A horse not castrated.

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

• staillon,
• stallian,
• stashion,
• staion,
• salloon,
• itallin,
• italion,
• stalion,
• stataion,
• stattion,
• stillin,
• stallon,
• swallon,
• staition,
• itallian,
• statiion,
• stalions,
• tallon,
• stasion,
• sallon

• stalino,
• stalinabad,
• stillings,
• Stallman,
• stealing,
• stalinist,
• stalinise,
• stalinize,
• stalin,
• stalinism,
• stalingrad,
• stalling,
• Stollings,
• stelling,
• stallings,
• stolon,
• stallone,
• stolen.

The adjective form of the word "stallion" is "stallionish".

The plural of the "stallion" can be the "stallions".

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