летучка(Example: "X. begins each day with a "jump start" meeting with staff to discuss potential risks, identify new contractors or visitors on the premises and also recognize good work". Ася Кудрявцева)
пленарка(rus -> eng: A plenary meeting is one at which all the members of a group or organization are present, esp. at a conference: a plenary session of the UN Security Council'More)
