折

On signage, etc.

No Right Turn

tucking up the hem of one's garments

of all times (for this to happen); of all days

to guarantee (someone's ability or the quality of their work); to vouch for; to endorse

On signage, etc.

No Left Turn

refracting telescope

very involved and troublesome situation; complicated twists and turns

Proverb

the soft may prove more durable than the hard; willow trees don't break under the weight of snow

Medicine

penile fracture

Godan verb with 'ru' ending (irregular verb)

to be worth the effort; to be worth the trouble

Work of art, literature, music, etc. name

Love's Labour's Lost (Shakespeare)

diffraction grating

Computing

loopback test

gambrel roof; mansard roof

felt hat; fedora; trilby

Medicine

refractive error; ametropia

Miura map fold; special technique for folding used on some solar panel arrays

leaflet; folded printed matter

Chemistry; Physics

x-ray diffraction

Idiomatic expression

to humbly implore; to beg profusely

duodecimo (folding)

diffraction region

diplomatic negotiations at the dinner table; diplomatic bargaining

diffraction limit