From Wiktionary, the free dictionary
tirar o chapéu (first-person singular present tiro o chapéu, first-person singular preterite tirei o chapéu, past participle tirado o chapéu)
- (idiomatic) to take one's hat off to (to express praise or respect [for]) [with para ‘someone’]
- Used other than figuratively or idiomatically: see tirar, o, chapéu.