フィルイン

noun

fill-in; fill (drum)

In music, a short rhythmic passage, usually on drums or percussion, that fills a gap between phrases.

• ドラムのフィルインが曲きょくにアクセントを加くわえている。

  The drum fill-in adds an accent to the song.

noun

infill (gel nails)

In nail art, the process of filling the gap between the cuticle and the existing gel to maintain the manicure.

• ジェルネイルのフィルインは3週しゅう間かんごとに行おこなうのが一いっ般ぱん的てきです。

  It's common to get a gel nail infill every three weeks.