broach, brooch

Broach or broach means rise to the top of the sea, as of a fish or submarine--
He looked over the side, and was surprised to see a large fish broach the surface.
Broach also means a sharp tool used to pierce something, as when tapping a keg--
He had an old-fashioned tool he used to broach the keg.
Broach or broach is more often used figuratively, meaning to bring something up for discussion or conversation, especially for the first time--
I am afraid to broach the subject with the boss, but I really need a raise.
He didn't want to broach the subject with everyone listening.

Brooch or brooch ( rhymes with broach, or with pooch ) means a clasp or pin, worn to secure a garment or as an ornament--
His mother gave me a pearl brooch when we were married.
I would like to have this old brooch mended; it's pretty.

Now that you know that, you can say--
"Since it seems a good time to broach the subject, what happened to the brooch I gave you for Christmas?"