swig

verb

1. To drink (usually by gulping or in a greedy or unrefined manner); to quaff.

   “That sailor can swig whisky with the best of 'em.”

2. (obsolete)To suck.

   “As sucking Colts leap when they swig the Teat”

3. To take up the last bit of slack in rigging by taking a single turn around a cleat, then hauling on the line above and below the cleat while keeping tension on the line.

noun

1. (obsolete)Drink, liquor.
2. (broadly)A long draught from a drink.

   “take a swig of whisky”

   “Jerry put his brandy bottle at the side of his pillow,—kindly informing him that he would have an opportunity of taking a few more swigs before he went down, for the water was only up to her bends at present.”

   “He looked up, however, at my coming, knocked the neck off the bottle like a man who had done the same thing often, and took a good swig, with his favourite toast of "Here's luck!"”

   “And he took the last swig out of the pint.”

   “Next, he opens up the cupboard over the sink and slams that shut too, only to open another cabinet door that houses what he's looking for, a glass. He pours it full of OJ and takes a huge swig, swallows, and repeats.”

3. (obsolete)A person who drinks deeply.
4. A tackle with ropes which are not parallel.
5. Warm beer flavoured with spices, lemon, etc.