From Longman Business Dictionaryuptickup‧tick /ˈʌptɪk/ noun1[countable usually singular]FINANCE a trade of shares at a higher price than that of its previous tradeThe general rule is that shares can be sold short only on an uptick. → compare downtick2[countable]ECONOMICS an increase or improvement in the level of somethinguptick inThere may be an uptick in housing construction.