Answer: caulked

AnswerCrossword Clue
CAULKEDMade watertight
CAULKEDMade airtight, as a window frame
CAULKEDPatched cracks with oakum.
CAULKEDApplied oakum to
CAULKEDWeather-stripped
CAULKEDWeatherproofed, in a way
CAULKEDSealed around windows, in a way
CAULKEDWeather-stripped, in a way
CAULKEDFilled in some gaps
caulkedto fill the seams of to keep water or air out
caulkedmaterial used to caulk seams
caulkedCAULK, to make the seams of a ship watertight, also CALK