La*cus"tral (?), La*cus"trine (?), a. [L. lacus lake: cf. F. lacustral, lacustre.]
Found in, or pertaining to, lakes or ponds, or growing in them; as, lacustrine flowers.
Lacustrine deposits Geol., the deposits which have been accumulated in fresh-water areas. -- Lacustrine dwellings. See Lake dwellings, under Lake.
© Webster 1913.