Oxford Dictionary English hat tip noun noun BrE BrE//ˈhæt tɪp// ; NAmE NAmE//ˈhæt tɪp// [usually singular] (especially North American English) Add to my wordlistjump to other resultshat tip (to somebody) (for something) used on the Internet to acknowledge somebody's part in something, providing information or ideas for something Hat tip to John Rowe for the link to this blog.Check pronunciation: hat tip oxfordlearnersdictionaries.com