角

cerastes; horned viper; horned adder

square pipe; square tube

angled luffa (Luffa acutangula); Chinese okra; dish cloth gourd; ridged gourd; sponge gourd; vegetable gourd; strainer vine; ribbed loofah; silky gourd; silk gourd; sinkwa towelsponge

Proverb

harsh words make the going rough; consider your words; a round egg can be cut into a square

hex key; hexagonal wrench key; Allen key (TM); Allen wrench (TM)

Computing

double-size character; character with a doubled width and/or height

Astronomy

mean anomaly

Computing

full-width space; em space

Medicine

actinic keratosis; solar keratosis; senile keratosis

training by participants of the same skill level (kendo)

Physics; Electricity, elec. eng.

angular frequency

Computing

half-width alphanumeric character

Food, cooking

chuck short ribs; chuck steak

Idiomatic expression

to give in (after initially resisting); to yield; to concede; to break (one's) horn

triangle headband; triangular scarf

fire crab (Pyromaia tuberculata)

Noun or verb acting prenominally

horned (of an animal); antlered; cornute

Medicine

angle-closure glaucoma

Anatomy

corneal epithelium

Medicine

keratoconjunctivitis

Printing

square sans-serif typeface; square gothic typeface

Organization name

Japan Cornea Society

Work of art, literature, music, etc. name

The Decagon House Murders (1987 novel by Yukito Ayatsuji)

Historical term

octagonal burial mound (Kofun period)