expression
tiny; very small; postage-stamp-sized
Idiomatic expression literally meaning 'like a cat's forehead'; used to describe a very small space, especially a room, apartment, or garden. Often used humorously or self-deprecatingly.
私の部屋は猫の額のような広さです。
My room is as small as a cat's forehead.
猫の額のような庭だけど、花を植えて楽しんでいます。
It's a tiny garden, but I enjoy planting flowers in it.