Image via Wikipedia
Oar: noun - long pole, flattened and made wider at one end to form a blade, used to move or steer a boat by pressing against water; something like an oar in purpose or shape; an implement with which something is stirred; in brewing, a pole to stir the mash in a tun. Verb – to row or move, as if propelled by oars. move the hands like oars.
‘Roberto tried out as fifth oar for Oxford but he caught a crab so frequently that they rejected him and chucked him in the river.’
‘Philippa used the oar to propel the small rowing boat away from the bank and save herself from the stalker who had been following her all day.’