ADJ. Thermos(R), vacuum | hip | metal, silver | conical, culture, round bottom (all science)
VERB + FLASK fill | carry When he climbed in the snow he always carried a silver flask of brandy for emergencies. | pull out She pulled out her flask and drank from it. | uncork, unscrew | drink (sth) from, take a swallow from, take a swig from
FLASK + VERB contain sth a culture flask containing 4ml of the medium
PREP. ~ of We took a flask of tea with us.