EXAMPLES FROM THE WEB FOR GULP
Santobono at one gulp emptied his glass and clacked his tongue.
In one gulp he could swallow a boy of my size, and this he did three times each day.
He swallowed down the tea with a gulp, and rammed the bread into his pocket.
Heneage ordered a large brandy and soda, and drunk half of it at a gulp.
The others could hear the big sigh with which he drew in a gulp of air.
Fandor brought him a glass of water, which he swallowed at a gulp.
He drank the liquor at a gulp and set the glass down on the table beside him.
And he swallowed a third of his firewater at a gulp and went to find her.
And with a flourish he raised his glass to his lips as if tossing off the liquor at a gulp.
"So is my son," said Kellett, with a gulp that half choked him.
late 14c., a native coinage or else from Flemish gulpe or Dutch gulpen "to gush, pour forth, guzzle, swallow," in any case possibly of imitative origin (cf. Swedish dialectal glapa "to gulp down"). Related: Gulped; gulping.