acostar
/akosˈtaɾ/ · A2 · verb
to put to bed
🛏️ a + costa (Latin for rib, side): to put someone on their side
From Latin costa, rib or side, the same root as English coast and Spanish costilla. To acostar is to lay someone on their side, hence put to bed. For a ship, it means bringing its side up to the coast, hence to berth.