咪咪 (mīmī): kitty (pet name for a cat)

Meanings

Mīmī, guòlái!

Kitty, come here!

Xiǎo mīmī zài shāfā shàng shuìjiào.

The little kitty is sleeping on the sofa.

usage

咪咪 is most commonly used as an affectionate name for a cat (like 'kitty'). It can also be slang for breasts, so context matters.

咪 mī