妈妈
māma · HSK 1
mother
👩 妈 = 女 (woman) + 马 (mǎ, horse) for sound
The character 妈 is a phono-semantic compound: 女 gives the meaning (woman/female) and 马 (mǎ) supplies the sound. Doubling it to 妈妈 gives the familiar reduplicated kinship term, like English mama.