Not sure of the origin, but a checkered history (or checkered past) means some good and some bad. Maybe it comes from the black and white colours of a chequer board ?
The tough, fibrous membrane, which lines the cavity of the skull and spinal column, and surrounds the brain and spinal cord; -- frequently abbreviated to dura.
That is the correct spelling of the verb or adjective checkered. It can mean covered in a checked pattern, or (metaphorically) inconsistent, with regard to some standard of behavior or morality.
No the noun is "spine", "Spinal" is an adjective. However in medical parlance "a spinal" can refer to an injection (of anaesthetic) into the spine and in this single instance "spinal" is a noun.
Cervical stenosis is a condition in which the spinal canal is too small for the spinal cord and nerve roots. This can cause damage to the spinal cord.
The history of words, their origins, and how their form and meaning have changed over time.
checkered.
A checkered history means that the history of someone or something is partly good (white) and partly bad (black), like the alternating black and white squares on a checker board.GAMENorth American: checkers, played on a checkerboardBritish: draughts, played on a draughtboard / chequerboardExample of usage"Chequered history of women's reservation bill" ~Headline in Hundustan Times, New Delhi, March 8, 2010.SIMILAR EXPRESSION: a checkered past:"The reformed gang leader hoped that his new girlfriend would never discover his checkered past"For more information, see Related links below.
the finish line
To form into squares or checkers; to lay with checkered work., Tessellated.
The brain and spinal cord; the cerebro-spinal axis; myelencephalon.
Myelopathy is the medical term meaning disease of the gray matter of the spinal cord. Inflammation of the spinal cord is myelitis.
The brain and spinal cord; the cerebro-spinal axis; myelencephalon.
Checkered elephant shrew.
what is the pathological condition of the spinal cord
Checkered Past was created in 1995.
Checkered puffer was created in 1758.
The Checkered Demon was created in 1968.