Definition from Wiktionary, the free dictionary
From Middle English cidre or sidre, from Old French cisdre or sidre (“beverage made from fermented apples”), from Medieval Latin sīcera, from Ancient Greek σίκερα (“fermented liquor, strong drink”), of Semitic origin.
Audio (US) (file)
- (UK) IPA: /ˈsaɪ.də(ɹ)/, X-SAMPA: /"saI.d@(r)/
- Rhymes: -aɪdə(r)
- (US) enPR: sīʹdə, sīʹdər, IPA: /ˈsaɪdə/, /ˈsaɪdɚ/, X-SAMPA: /"saId@/, /"saId@`/
- (UK, Ireland, Australia, New Zealand, uncountable) An alcoholic, sparkling (carbonated) beverage made from fermented apples.
- (US, uncountable) A non-alcoholic, still beverage consisting of the (usually unfiltered and still containing pulp) juice of early-harvest apples. (Without pulp such a beverage is called apple juice.)
- (Australia, uncountable) A non-alcoholic carbonated beverage made from apples.
- (in Japan) A non-alcoholic drink, normally carbonated; equivalent to soft drink.
- Any particular type of one of these beverages.
- She liked an aged cider. He liked a harder cider.
- (countable) A cup, glass, or serving of any of these beverages.
Derived terms 
non-alcoholic still beverage
drink/glass of cider
soft drink — see soft drink