"Variant of Shauna"
The name Lashauna is commonly a female name from the "Irish" origin.
Lashauna fits the pattern of American feminine names made by adding an initial La- to an existing name, in this case Shauna, the Irish feminine of Sean (Irish Seán), itself the Irish form of John. The earliest United States birth record for Lashauna, in 1969, is consistent with that modern formation rather than with an older independent name. Apart from whatever attaches to Shauna, no separate meaning is recorded for the Lashauna spelling.
Shauna means "God is gracious. The Irish form of Jane.".
The pronunciation of Lashauna is luh-SHAW-nuh.