noun

1. any small, bottle-shaped container with a narrow neck, used in laboratories, etc.
2. a small, flattened container for liquor, etc., to be carried in the pocket
3. the frame for a mold of sand in a foundry

Etymology: ME < ML flasco & OE flasce, both < LL flasco (gen. flasconis) < flasca < Gmc *flasko, bottle, wicker-enclosed jug, prob. < base of OHG flechtan, to weave: for IE base see flax