Meanings

one horseman

one scoop (of water)

one's every action

one mind

anecdote

feeling of relief (for the time being)

single-mindedly

unicameral system

one-yen bill

monosyllable

passing (e.g. of a typhoon)

one round

first floor

one block

one bunch

link (e.g. in a chain of events)

serial number

single-lens reflex camera

new method

one matter