This is the 12711th most frequent Portuguese word.
tunelzinho
A small tunnel.
Here, "tunelzinho" refers to a small, possibly decorative or playful, structure designed as a tunnel, emphasizing its diminutive and personal nature by the suffix "-zinho".
O gato entrou no tunelzinho de brincar que comprei ontem.
The cat entered the little play tunnel I bought yesterday.
In this case, "tunelzinho" depicts a small tunnel feature in a playground, again using the suffix "-zinho" to show it is small and perhaps suitable for a playful environment.
Crianças gostam de atravessar o tunelzinho no parquinho.
Children like to pass through the little tunnel in the playground.
Here, "tunelzinho" is used to describe a small craft-project tunnel made of paper, demonstrating the use in creative or educational contexts.