器

Archeology

bone tool; horn implement

colliding-beam accelerator; (particle) collider accelerator

prototype kilogram

distribution transformer; service transformer; pole-mounted transformer

stomach pump

air conditioner; cooler

Buddhism

mendicant priest's begging bowl

measure for volume

arms exportation

electric water heater

Biology

organelle

burner (e.g. gas); combustor

vomeronasal organ

political weapon

hypsometer

chopping tool; chopping stoneware

idiophone

Medicine

chronic obstructive respiratory disease

Electricity, elec. eng.

step-down transformer

dropper

sounder (e.g. for a telegraph)

ceramics shop

antheridium

Computing

parallel adder