Search and compare thousands of words and phrases in British Sign Language (BSL). The largest collection online.
How to sign: a system that keeps air cool and dry
Similiar / Same: air conditioner, air conditioning
Categories: cooling, cooling system
How to sign: an electric current that reverses direction sinusoidally
"In the US most household current is AC at 60 cycles per second";
Similiar / Same: alternating current
Categories: electrical energy, electricity
