also: ろはだい
noun
free seat; free bench
Colloquial term for a public bench or seat that can be used without paying. Often used in casual conversation, especially among older speakers or in reference to park benches.
See also: ロハ
公園のロハ台でお弁当を食べた。
I ate my lunch on a free bench in the park.
あのロハ台はいつもお年寄りでいっぱいだ。
That free bench is always full of elderly people.
ベンチ is the standard word for 'bench'. ロハ台 emphasizes that it is free to use, often in a public space.
From ロハ (slang for 'free', a reversal of ただ) + 台 (stand, platform). The term likely originated in casual speech to refer to public seating that costs nothing.