Correct spelling, explanation: an English word wheelbarrow comes from an Old English type of device, which was known as barew and was used for carrying things. Later, a wheel was added to the device so wheelbarrow joins two words – a wheel and a barrow.

Definition of wheelbarrow:
1. noun – an open container with one wheel and two handles, usually used in the garden for carrying things,
You can put all the leaves into the wheelbarrow and leave them in the corner behind the house.

Synonyms to wheelbarrow:
Some similar expressions to wheelbarrow are as follows: holder, barrow, hand trolley.

Incorrect spelling, explanation: a barrel and barrow are two English words with similar spelling and probably that is the reason why some learners and native users of English confuse them and instead of wheelbarrow, they use the word wheelbarrel. This form, however, is wrong as the two words may look similar, but their meaning is different.