An attitude of respectful humility (when asking a favor or apologizing)
“Hori-san went hat in hand to the bank to ask for an extension on the company’s loan. “
Hat tip
A note of recognition or thanks
The newspaper columnist wrote at the end of his column, “A hat tip to Kazuo Inoue for sending me the data. “ Note: A written expression that describes the physical act of tipping one’s hat in recognition or gratitude to another person.
Keep something under one’s hat
Keep information secret
“Keep the news of the merger under your hat until the end of the month.“
Hat trick
Three successes in one session (baseball runs, soccer goals, business successes)
“By purchasing three companies in a single year, Matsuzaka-san scored a hat trick. “
Throw one’s hat in the ring
To run for election or put oneself up for consideration
“It seems that Fukuda-san has thrown his hat in the ring for the election of the next prime minister. “