noun
ice-cream cone
Used for the edible cone or cone-style serving option for ice cream, often contrasted with カップ.
カップではなくコーンでお願いします。
A cone, not a cup, please.
noun
speaker cone
Audio-equipment use: the cone-shaped diaphragm part of a speaker. Context usually makes this clear.
The cone of the old speaker is torn.
noun
Used for road-safety or construction-site cones; カラーコーン and 三角コーン are more explicit terms.
工事現場の前に赤いコーンが並んでいる。
Red traffic cones are lined up in front of the construction site.