From Longman Business Dictionarylock into something phrasal verb1[transitive] to come to a firm agreement that will last for some time and cannot be brokenA company is often forced to lock into a pricing schedule before it is sure about the cost of developing and producing a new technology.2be/become locked into something to be in or get into a position where you have agreed to do something and so have to do itThe firm has become locked into long-term contracts. → lock→ See Verb table
