one small animal
Counter for one small animal, such as a cat, dog, fish, or insect. Used with the reading いっぴき.
See also: 匹
There is one cat in the garden.
I keep one goldfish.
two-tan bolt of cloth
Only when written 一疋
Specialized counter for a bolt of cloth measuring two tan (about 20 yards). Rare outside traditional textile contexts.
See also: 反 (たん)
This roll of cloth is one bolt, which is twice the length of one tan.
There is one cat in the yard.
There wasn't even a single fish in the pond.
one roll of silk