Linden tree pool or island of flax
Linsy is a modern phonetic variant of Lindsay or Lindsey. It originates from an English surname derived from the Lindsey region in Lincolnshire, which historically referred to an island or a pool surrounded by linden trees or flax.
Less common today
Linsy isn't in the latest US Top 1000. It last peaked at #7,332 in 1993.
US births per 5-year period, 1990βpresent (SSA data).