1. a hummingbird
Usage: informal
2. something that hums or makes a humming sound
3. something outstanding or remarkable of its kind
Usage: informal

Examples

• A tiny hummer visited the red flowers in our garden.
• The hummers at the feeder were fighting over territory.
• The old air conditioner was quite a hummer on hot days.
• The electric motor made a steady hummer as it ran.
• That math problem was a real hummer to solve.
• The new sports car is a real hummer on the highway.
• We watched several hummers dart between the trumpet vines.