What's the meaning of the word "oar"?

[Samuel]

English Language Tests, Intermediate level

ESL/EFL Test #246 "Confusing Words test (19)", question 10

As the raft went down the river rapids, the guide lost an ......... in the process.

(a) or
(b) ore
(c) oar

English Language Tests, Intermediate level

ESL/EFL Test #246 "Confusing Words test (19)", answer 10

As the raft went down the river rapids, the guide lost an oar in the process.

Correct answer: (c) oar

Your answer was: incorrect
As the raft went down the river rapids, the guide lost an ore in the process.
_________________________

what's the meaning of the word "oar"?

Samuel

[Mister Micawber]

.
Please try your dictionary, Samuel. Oar is an easy word.
.
_________________
Canadian-American native speaker
who teaches English for a living at Mister Micawber's
ESL cafe: Interview with Mr. Micawber