n.
1) The largest sized tumbler;
2) the long drink served in it. The idea is taken fromdeep-sinking in a mining shaft.
1897. `The Argus,' Jan. 15, p. 6, Col 5:
«As athletes the cocoons can run rings round the beans; theycan jump out of a tumbler – – whether medium, small, or deepsinkeris not recorded.»