Term: grille: grating that admits cooling air to car's radiator
Broader: obstruction: any structure that makes progress difficult | Unrelated: treasure trove: treasure of unknown ownership found hidden (usually in the earth)
Broader: obstruction: any structure that makes progress difficult | Unrelated: incomprehension: an inability to understand
Broader: obstruction: any structure that makes progress difficult | Unrelated: endospore: a small asexual spore that develops inside the cell of some bacteria and algae
Broader: obstruction: any structure that makes progress difficult | Unrelated: real estate investment trust: an investment trust that owns and manages a pool of commercial properties and mortgages and other real estate assets; shares can be bought and sold in the stock market
Broader: obstruction: any structure that makes progress difficult | Unrelated: charge unit: a measure of the quantity of electricity (determined by the amount of an electric current and the time for which it flows)
Broader: obstruction: any structure that makes progress difficult | Unrelated: ambassador: an informal representative
Broader: obstruction: any structure that makes progress difficult | Unrelated: squill: bulb of the sea squill, which is sliced, dried, and used as an expectorant
Broader: obstruction: any structure that makes progress difficult | Unrelated: cafe au lait: equal parts of coffee and hot milk
Broader: obstruction: any structure that makes progress difficult | Unrelated: coffer: an ornamental sunken panel in a ceiling or dome
Broader: obstruction: any structure that makes progress difficult | Unrelated: squirrel cage: cage with a cylindrical framework that rotates as a small animal runs inside it