1A type of transparent adhesive tape (often a brand name) used commonly for sticking paper and everyday repairs.
資料をまとめるのにセロテープで四隅を留めた。
I taped the corners with sellotape to keep the documents together.
セロテープをちぎるときは指で弾くとうまく切れることが多い。
When tearing sellotape, flicking it with your finger often gives a clean tear.
壁にポスターを貼るときはセロテープより両面テープのほうが目立たない。
When putting up a poster, double-sided tape is less noticeable than sellotape.