sibilo (zn):
gesis(en) sound made by a snake, cat, escaping steam, etc..
(en) —., sis(en) sound made by a snake, cat, escaping steam, etc..
(en) —., huilen(en) long-drawn, high-pitched complaining cry or sound., jammeren(en) long-drawn, high-pitched complaining cry or sound., zeuren(en) long-drawn, high-pitched complaining cry or sound., zoem(en) continuous humming noise.
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