lock பூட்டு pūṭṭu (puuṭṭu) (3 tr) secure a lock; fix a lock, assemble, set, or put s.t. together; fasten with or as with a lock; secure (a door, a house, a car, etc.) by operating a locking mechanism
Usage:
வெளியே போகும் பொழுது, வீட்டைப் பூட்ட மறக்காதே! veḷiyē pōkum poḻutu, vīṭṭaip pūṭṭa maṟakkātē! veḷiye poohumboodu viiṭṭe puuṭṭa marakkaade? Don't forget to lock the house when you leave!