There are two different words in the Batavia corpus, but it is not clear whether maw denotes only the hand or the hand and the forearm.
In the case of peo 'foot', expressions like peo kutu 'short legs' and bariga di peo 'calf' (lit. 'belly of the leg') show that peo (< Portuguese pé 'foot') cannot only mean 'foot', but also 'leg' or 'leg up to the knee'.
Besides this, one source for Tugu indicates that mao means 'hand and forearm'.
Source: Philippe 2011: 264, 219