Old English hweol, hweogol "wheel," from Proto-Germanic *hwewlaz (source also of Old Norse hvel, Old Swedish hiughl, Old Frisian hwel, Middle Dutch weel), from PIE *kw(e)-kwl-o- "wheel, circle," suffixed, reduplicated form of root *kwel- (1) "revolve, move round; sojourn, dwell."
Figurative sense is early 14c. Wheel of fortune attested from early 15c. Slang wheels "a car" is recorded from 1959. Wheeler-dealer is from 1954, a rhyming elaboration of dealer.
"flat, rectangular frame with projecting handles for carrying a load," c. 1300, barewe, probably from an unrecorded Old English *bearwe "basket, barrow," from beran "to bear, to carry," from PIE root *bher- (1) "to carry." The original (hand-barrow) had no wheel and required two persons to carry it.
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Definitions of wheelbarrow from WordNet
transport in a wheelbarrow;
a cart for carrying small loads; has handles and one or more wheels;