Capsicum (chili pepper); a red fruit used as a spice to add heat to food, including dried or powdered forms.
鍋には唐辛子を少し入れて、ピリッとさせた。
I added a little chili pepper to the hot pot to give it a kick.
庭で唐辛子を育てて、乾燥させてから料理に使う。
I grow chili peppers in the garden, dry them, and then use them in cooking.
唐辛子を使ったソースは思ったより辛い。
The sauce made with chili peppers is spicier than I expected.
赤唐辛子の粉をパスタにかけたら風味が増した。
Sprinkling red chili powder on the pasta enhanced its flavor.
Used as an abbreviation for shichimi togarashi (seven-flavor chili pepper) in some contexts.
店によっては『唐辛子』と書いて七味を出すところもある。
Some shops write 'togarashi' and serve shichimi (seven-flavor chili) instead.
蕎麦屋で唐辛子をかけて食べる人もいる（＝七味）。
Some people sprinkle togarashi on their soba (i.e., shichimi).