batten

nouns

stuffing made of rolls or sheets of cotton wool or synthetic fiber
batten, batting
a strip fixed to something to hold it firm
batten
is a type of (narrower)
thin piece of wood or metal
strip

verbs

furnish with battens
"batten ships"
batten, batten down, secure
secure with battens
"batten down a ship's hatches"
batten
is a type of (narrower)
make strong or stronger
"This exercise will strengthen your upper body"; "strengthen the relations between the two countries"
beef up, fortify, strengthen