とか

Case-marking particle と (to) plus adverbial particle か (ka)

とか (rōmaji toka)

1. something like, some kind of; where the situation is unclear

Parallel marking particle と (to) (used to join two words together in the same way as や (ya)) plus adverbial particle か (ka)

とか (rōmaji toka)

1. such as, and so on; used when listing something part of a larger group of similar things
2. or something, used to avoid stating something clearly and add vagueness

This is not a true particle but is a compound of two particles which is used idiomatically.