spiderweb; cobweb
Refers to the web spun by a spider. Can be used literally or figuratively (e.g., a dusty, abandoned cobweb).
A big spiderweb is hanging in the corner of the garden.
The old house was full of cobwebs.
Standard kanji spelling; 蜘蛛 is the kanji for 'spider' and 巣 means 'nest/web'.
Common mixed spelling using katakana for クモ, often seen in informal or explanatory contexts.
Compound of 蜘蛛 (kumo, 'spider') + の (possessive particle) + 巣 (su, 'nest/web'). The reading くも is the native Japanese word for spider, and す is the native word for nest or web.