na-adjective
Slangy, playful term for something or someone that is weird, odd, or offbeat. Often used in a lighthearted or teasing way.
あの人のファッション、妙ちくりんだね。
That person's fashion is really weird, isn't it?
この
This story is so odd it makes me laugh.
The origin is uncertain. It is likely a playful sound-symbolic coinage combining 妙 (みょう, 'strange') with the rhyming suffix ちくりん, which may be imitative or nonsense.