obstacle

(geometry) nonagon

mountain (typically used in compounds and place names only)

(geometry) proof

(geometry) pentagon

(Buddhism) Eight Precepts

sick person / chronic invalid

(archaic) measure of time spanning six ပြန် (pran) or 24 seconds

week (unit of time) / cycle of events or processes / cycle of seven days

(astrology) Cancer, the fourth sign of the zodiac