No independent English meaning found for this name in these sources. Its Arabic spelling matches a real word in the Quran — see the citation below.

Keeps fasts, Fasting woman, , fem. of Saim.

Man with a alluring heart, one of a kind

Siyam is a direct Quranic name for boys and girls that means fasting (to refrain from eating for a period of time), which is a practice followed by Muslims throughout the month of Ramadan. The word Siyam is used nine times in the Quran.

Suwaim is an Arabic name for boys that means gold. It also means bamboo, reed.