espresso machine
Electric coffee maker that allows hot water to be forced under pressure through the ground beans.
tamper 
Tool used to pack the ground beans into the filter.
drip tray 
Compartment into which excess liquid drains.
water tank 
Reservoir where the water is kept before it is required for heating.
on-off switch 
Button for turning the device on or off.
filter holder 
Removable part with a handle into which the metal filter containing the ground beans is inserted.
steam nozzle 
Device that emits steam used to foam milk.
steam control knob 
Device used to regulate the steam coming out of the nozzle.