"snug" in the noun sense
1. cubby, cubbyhole, snuggery, snug
a small secluded room
"snug" in the adjective sense
1. snug
offering safety well protected or concealed
"a snug harbor"
"a snug hideout"
2. close, snug, close-fitting
fitting closely but comfortably
"a close fit"
3. snug
well and tightly constructed
"a snug house"
"a snug little sailboat"
4. cozy, cosy, snug
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"
Source: WordNet® (An amazing lexical database of English)
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