1. A stone to raise the feet above the water or dirt in walking; a means of progress.

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

• atepping stone,
• ztepping stone,
• xtepping stone,
• dtepping stone,
• etepping stone,
• wtepping stone,
• srepping stone,
• sfepping stone,
• sgepping stone,
• syepping stone,
• s6epping stone,
• s5epping stone,
• stwpping stone,
• stspping stone,
• stdpping stone,
• strpping stone,
• st4pping stone,
• st3pping stone,
• steoping stone,
• stelping stone

The adjective form of the word "stepping stone" is "stepping-stone" (with a hyphen).

The plural form of the word "stepping stone" is "stepping stones"

The singular form of the word "stepping stone" is "stepping stone".