レスカMeanings1nounlemon squashabbreviationAbbreviation of レモンスカッシュ, a non-alcoholic lemon drink popular in Japan. Common in casual contexts.See also: レモンスカッシュ居い酒ざか屋やでとりあえずレスカを頼たのんだ。At the izakaya, I ordered a lemon squash for starters.