an ace in cards or a "one" in dice / the first or top item

a pin, such as a hairpin, tie pin, bowling pin, or golf pin

popular person

stairs used in emergencies

state of emergency (unusually difficult or dangerous situation)

U-shaped hair pin.

(chiefly Kansai) Synonym of 画鋲 (gabyō, “thumbtack; pushpin”)

安全ピン: a safety pin

an unfocused photograph, a misfocused image / an unfocused argument, unclear speech or writing

(photography) out of focus / (discourse, argument) unfocused, off the mark, unclear