Found in the following dictionaries
SOWPODS (Collins Scrabble Words)
"Snig" Definition
noun
A small eel.
Source: Wiktionary
An eel.
Source: Century Dictionary
verb
To drag a log along the ground by means of a chain fastened at one end.
Source: Wiktionary
To sneak.
Source: Wiktionary
verb-transitive
To chop off; to cut.
To cut or chop off.
Source: Century Dictionary
To cut; bite; nag.
Source: Century Dictionary
a dialectal variant of snug.
Source: Century Dictionary