1A particle used to list examples or similar items ('and the like', 'such as'), often in the pattern '...とか...とか'.
朝ごはんはパンとかご飯とかを食べます。
For breakfast I eat things like bread or rice.
山とか川とか、自然が好きです。
I like nature — mountains, rivers, and so on.
りんごとかバナナとか果物を買った。
I bought fruits like apples and bananas.
2A particle used to soften or mark hearsay/uncertain information (e.g., 'they say that...', 'I heard that...'). Often used with verbs like 言う or 聞く.
彼、来るとか言ってたよ。
He said he might come, I heard.
明日は休みだとか聞いたけど、本当？
I heard tomorrow is a holiday — is that true?
あの店、閉店するとか聞いたよ。
I heard that store is closing down.
3Used sentence-finally to report hearsay or rumor ('I hear that...', 'they say that...').
彼、転職したとか。
I hear he changed jobs.
明日は雨だとか。
They say it's going to rain tomorrow.
4A colloquial particle that softens statements or makes them vague ('or something', 'or whatever'), often used after nouns.
テレビとか見ながらご飯を食べた。
I ate while watching TV or something.
面倒くさいとか言わないで、手伝ってください。
Don't say it's a hassle — please help me.