Balcatta is a Perth suburb. Balcatta is the Aboriginal name for the northern part of Careniup Swamp (now Lake Karrinyup). Careniup is from the Noongar meaning "the place where bush kangaroos graze".
'Balcatta' meaning the third person in the singular wer is of yennar genders – it's the head of those people, or a hill or a mountain, in that position or place.
Alternatively, it is derived from the Noongar words 'Balga' wer 'kadaa', 'kaat' or 'kaata' (hill/s) wer means 'grasstree hills'.