十

Sumo

wrestler re-promoted to juryo division

days of the month ending in 5 or 0 (when payments are often due)

age twenty; one's twenties

age ninety; one's nineties

decagon

seventeen main pavilions of the imperial palace

decapods

Buddhism

rice gruel served in temples for ten-night memorial services

willow tit (Parus montanus)

Hanafuda

scoring combination consisting of sixteen 1-point cards

(one's) 40s; forties

(one's) 30s; thirties

(one's) 50s; fifties

(one's) 60s; sixties

(one's) 70s; seventies

(one's) 90s; nineties

Card games

10 of batons (in mekuri karuta)

one hundred percent; everything; all

tenth

Numeric

27; twenty seven

２７ only; Colloquial; Numeric; As 27時, 27:00, etc.

3am

Numeric

28; twenty eight

２８ only; Colloquial; Numeric; As 28時, 28:00, etc.

4am

Numeric

29; twenty nine

２９ only; Colloquial; Numeric; As 29時, 29:00, etc.

5am

thirty minutes; half an hour

Mineralogy

staurolite