Question

a bit overweight might also be called this

Answer 1

There are many words or synonyms which mean "a bit overweight." The word that you use, depends on the sentence, as overweight could be used to describe a person, luggage, etc
1. obese
2. bulky
3. stout
4. plump

Answer 2

Overweight can be used as an adjective, noun and a verb.

When used as an adjective this word means something weighing too much or something which is more than what is considered normal. The example of this word as an adjective can be an 'overweight suitcase' or an 'overweight patient.'

When this word used as a noun this means something as an extra thing or excess weight and when this word is used in a sentence as a noun this can be for example; 'an overweight problem in children should not be ignored'

When this word is used as a verb this means something that weighs excessively or which exceeds the weight limit or giving some topic too much consideration. 

We can take examples of this word in everyday use for example:

- The airlines say if the baggage is overweight an extra fee should be paid 
- Anabelle became a mother of two overweight sons.

This word was introduced in 1917.