What does 古老 (gǔ lǎo) mean in English?

Card 350HSK 2010 Level 5350/1311
CARD350
PROGRESS27%
古老
gǔ lǎo
ancient; old; age-old

Reveal: Click/Space/Enter/↑↓/w/s/j/kNavigate: ←→/h/l/a/d