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batten

1 batten /ˈbætn̩/ verb
battens; battened; battening
1 batten
/ˈbætn̩/
verb
battens; battened; battening
Britannica Dictionary definition of BATTEN

batten down

[phrasal verb]
: to prepare for possible trouble or difficulty
batten down (something) or batten (something) down : to tie, close, or cover (something) in order to prevent it from moving or becoming damaged
batten down the hatches : to prepare a boat or ship for dangerous stormy weather by closing and covering the openings in the deck often used figuratively

batten on

[phrasal verb]
batten on (something or someone) British, formal + disapproving
: to live well or succeed by using (something or someone)
2 batten /ˈbætn̩/ noun
plural battens
2 batten
/ˈbætn̩/
noun
plural battens
Britannica Dictionary definition of BATTEN
[count]
: a long thin piece of wood that is used to connect and support other pieces of wood