barrage, borage

Barrage or barrage means a concentrated attack of repeated shells or bombs, or figuratively, words--
The fortifications were nearly destroyed by the last barrage.
The assailant fled, chased off by a barrage of blows and kicks.

Barrage may also mean a small dam or obstruction placed in a watercourse--
A barrage here diverts the water into the mill  stream.

Borage or borage is a flowering edible herb, native to Europe--
The flavor of borage is similar to cucumbers.
Borage is used in several different home remedies.

Now that you know that, you can say--
"His talk on the uses of borage was followed by a barrage of questions from the audience."