Source : Webster's Revised Unabridged Dictionary (1913)

Snug \Snug\, v. i. [imp. & p. p. {Snugged}; p. pr. & vb. n.
   {Snugging}.]
   To lie close; to snuggle; to snudge; -- often with up, or
   together; as, a child snugs up to its mother.

Source : WordNet®

snug
     adj 1: offering safety; well protected or concealed; "a snug
            harbor"; "a snug hideout"
     2: fitting closely but comfortably; "a close fit" [syn: {close},
         {close-fitting}]
     3: well and tightly constructed; "a snug house"; "a snug little
        sailboat"
     4: enjoying or affording comforting warmth and shelter
        especially in a small space; "a cozy nook near the fire";
        "snug in bed"; "a snug little apartment" [syn: {cozy}, {cosy}]
     [also: {snugging}, {snugged}, {snuggest}, {snugger}]

snug
     n : a small secluded room [syn: {cubby}, {cubbyhole}, {snuggery}]
     [also: {snugging}, {snugged}, {snuggest}, {snugger}]

snugging
     See {snug}