Medical Devices And Equipment

noun eyeglasses with lenses that have two distinct optical powers for near and distant vision

• The optometrist recommended getting a pair of bifocals to help with both near and far vision.
• My grandma finally gave in and started wearing bifocals to read her books.
• I feel so old now that I have to wear bifocals to see clearly.
• His ability to see both the big picture and the details is like wearing mental bifocals.

verb to adjust or mark (a measuring instrument) so that it can be used to measure accurately

• The scientist needed to calibrate the equipment before conducting the experiment.
• Make sure you calibrate the scale before weighing anything.
• I gotta calibrate my phone so it stops acting up.
• It's important to calibrate your expectations to avoid disappointment.

noun a pipe or channel that carries away waste water or sewage

verb to cause the water or other liquid in something to run out, leaving it empty or dry

• The plumber unclogged the drain in the kitchen sink.
• I need to clean out the drain in the shower, it's clogged again.
• I can't believe you drank all my soda, you really know how to drain it!
• The constant demands of his job were starting to drain his energy.

noun a device that fits in or over the ear and is used for listening to audio

• The ear speaker on the phone allows you to hear the other person clearly during a call.
• Make sure to clean the ear speaker on your phone regularly to prevent muffled sound.
• I can't hear anything because my ear speaker is busted.
• Her words were like a soothing melody coming through the ear speaker of my heart.