Answer:

hubbard

Answer	Crossword Clue
HUBBARD	Dog owner of rhyme
HUBBARD	Winter squash.
HUBBARD	Kind of squash.

HUBBARD	Grid immortal or squash
HUBBARD	Mother ...
HUBBARD	Mother who had a bone to pick?
HUBBARD	'Old Mother' with a bare cupboard
HUBBARD	"Battlefield Earth" author
HUBBARD	An old mother