bathing cap, swimming cap
['ballpoint, ballpoint pen, ballpen, Biro', 'water snake', 'rule, ruler', 'great white shark, white shark, man-eater, man-eating shark, Carcharodon carcharias', 'washbasin, handbasin, washbowl, lavabo, wash-hand basin', 'ant, emmet, pismire', 'rhinoceros beetle']