{"senses": [{"links": [["sound", "sound"], ["sound wave", "sound wave"]], "glosses": ["A sound produced by sound waves bouncing back and forth off between two parallel surfaces."], "categories": ["English countable nouns", "English entries with incorrect language header", "English lemmas", "English multiword terms", "English nouns", "Pages with 1 entry", "Pages with entries"]}], "pos": "noun", "head_templates": [{"name": "en-noun", "args": {}, "expansion": "flutter echo (plural flutter echos)"}], "forms": [{"form": "flutter echos", "tags": ["plural"]}], "word": "flutter echo", "lang": "English", "lang_code": "en"}