The Collaborative International Dictionary
Parr \Parr\ (p[aum]r), n. [Cf. Gael. & Ir. bradan a salmon.] (Zo["o]l.)
A young salmon in the stage when it has dark transverse bands; -- called also samlet, skegger, and fingerling.
A young leveret.
Wiktionary
n. (context archaic English) A parr; a young salmon.
Usage examples of "skegger".
And 'tis noted, that those little Salmons called Skeggers, which abound in many rivers relating to the sea, are bred by such sick Salmons that might not go to the sea, and that though they abound, yet they never thrive to any considerable bigness.
There are also, in divers rivers, especially that relate to, or be near to the sea, as Winchester, or the Thames about Windsor, a little Trout called a Samlet, or Skegger Trout, in both which places I have caught twenty or forty at a standing, that will bite as fast and as freely as Minnows: these be by some taken to be young Salmons.