ちょっと一杯[chottoippai] let's have a quick drink
ばつ一[batsuichi] being once divorced
一向[hitaburu] nothing but
サラダ一皿[saradahitosara] plate of salad

安全第一[anzendaiichi] safety first
一か八か[ichikabachika] sink or swim
一っ走り[hitoppashiri] spin (as in 'take a car for a spin')
一つ一つ[hitotsuhitotsu] one-by-one

一闋[hitokusari] passage in a discourse

一齣[hitokoma] scene
一齣[hitokusari] passage in a discourse
齣撮り[komadori] frame-by-frame recording (animation)
齣落とし[komaotoshi] time-lapse photography

一齣一齣[hitokomahitokoma] frame by frame
齣飛び[komatobi] frame skipping (e.g. during video playback)
齣送り[komaokuri] frame-by-frame playback