1 down
Bias
added
to
a
line
in
personal
kind
of
column
(6)
Bias added to a line in personal kind of column (6)
hints
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checks
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hints
The definition is at the end of the clue.
How the clue works
Here personal kind of column gives us the spinal column. Take SPIN for "bias", then add A for "a" and L as the abbreviation for "line", and running them together spells SPINAL.