fingerling

Meaning

1. A juvenile fish that has developed scales and working fins.
2. A type of small potato grown primarily in North America.
3. An infant weasel, stoat, ferret; esp. weasels.
4. (broadly) Any finger-sized version of something typically larger.

Synonyms

young fish

Etymology

Inherited from Middle English: fyngyrlynge

In summary

From Middle English fyngyrlynge, equivalent to finger + -ling, from having the size of a human finger.