pre-noun adjectival
Colloquial, informal variant of 小さな (ちいさな). Used before nouns to describe something as small or tiny, often with a casual or affectionate tone.
See also: 小さな
ちっさな子どもが公園で遊んでる。
A tiny kid is playing in the park.
ちっさな花が咲いてたよ。
A little flower was blooming.