As a noun ranker
is .
As a verb racker is
.
ranker
English
Adjective
(head)
(rank)
Noun
(
en noun)
One who ranks things, or arranges them in ranks.
A kind of soil developed over non-calcareous material, usually rock.
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racker
English
Noun
(
en noun)
One who racks.
A horse that has a racking gait.