sole
/ˈsōl/
adjective
being the only one
having no sharer
functioning independently and without assistance or interference
she was her mother's sole support
noun
the undersurface of a foot
the part of an item of footwear on which the sole rests and upon which the wearer treads
the usually flat or flattened bottom or lower part of something or the base on which something rests
verb
to furnish with a sole
to place the sole of (a golf club) on the ground
sole a shoe