This is the 6829th most frequent Japanese word.
ブ
"ブ" is the katakana character for the sound "bu."
Here, 'ブ' appears in the word '驚き' (odontoriki), which means 'surprise'.
その映画は、驚きの結末が待っていました。
That movie had a surprising ending.
In this sentence, 'ブ' is found in '吹く' (fuku), originating as a phonetic segment but not primarily serving conceptual meaning here.
彼はクラリネットとサックスを吹くのが得意です。
He is skilled at playing the clarinet and saxophone.
The 'ブ' is part of the compound word 'ブルーベリー' (blueberry, transliteration), establishing its usage in transcribed foreign words.