sinumbra lamp

or si·num·bral lamp

[ si-nuhm-bruh ]
/ sɪˈnʌm brə /

noun

an unshaded sperm-oil lamp consisting of a translucent glass globe supported on a pedestal: a form of astral lamp.

Origin of sinumbra lamp

1825–35; < Latin sin(e) without + umbrā shade, shadow

Words nearby sinumbra lamp