"swig" in the noun sense
1. gulp, draft, draught, swig
a large and hurried swallow
"he finished it at a single gulp"
"swig" in the verb sense
1. slug, slog, swig
strike heavily, especially with the fist or a bat
"He slugged me so hard that I passed out"
2. gulp, quaff, swig
to swallow hurriedly or greedily or in one draught
"The men gulped down their beers"
Source: WordNet® (An amazing lexical database of English)
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