sandbag in Finnish

A small bag filled with sand and used as a cudgel.

(transitive, intransitive) To construct a barrier of sandbags (around).

(transitive) To strike someone with a sandbag or other object to disable or render unconscious.

(figurative, intransitive, originally, US) To conceal or misrepresent one's true position, potential, or intent in order to gain an advantage; (originally, poker) to pretend to have a weak hand, as a strategy.

To pretend to drink alcohol early on so that, as the night draws on, one can drink everybody else "under the table".