dashboard; front panel
Refers to the dashboard or front panel of a vehicle, especially in automotive contexts. 'Frontlet' is an uncommon translation; 'dashboard' is the primary modern equivalent.
車の前板にナビを取り付けた。
I installed a navigation system on the car's dashboard.
前板の上に小物を置かないでください。
Please do not place small items on the dashboard.
Compound of 前 (mae, 'front') and 板 (ita, 'board, panel'). The exact historical derivation is uncertain, but the word literally describes a front-facing panel.