Abby's Tricycle is very frequently wrongly called a bike (which is slang short for bicycle) which is inaccurate since that means two wheels. It is most definitely a tricycle, the short form of which would be 'trike', not 'bike'.
One playset which includes Abby's tricycle refers to it as an "adventure bike" even though it clearly has three wheels and not two.
Even a reporter made the mistake of calling it a bike:
Abby commits this error herself in the episode Shape of Grumbles, saying "bike" twice:
Terry then Abby then Bozzly all make the mistake in Otis on the Go as well:
When Abby's trike changes into the Fuzzly Flyer it is correct to call it a bike because the two rear wheels come together into a single wheel.
In Abby Babysits Melvin, Melvin calls it "Abby's flying bike".
Transcript errors and accuracy
The transcripts used on the TVOkids website also frequently wrongly refer to it as a bike. This is in two recycled (likely cut and pasted) descriptions of stock footage used in the show:
Despite this, another recycled description of the animation at the start DOES correctly identify the vehicle: