What is the meaning of Holm?

Small island, islet.

An island in a lake, river or estuary; an eyot.

Any small island, but especially one near a larger island or the mainland, sometimes with holly bushes; an islet, often in Norse-influenced place-names.

Rich flat land near a river, prone to flooding.

Common holly (Ilex aquifolium).

A holm oak (Quercus ilex), a common evergreen oak of Europe.

a small island

a small island; an islet

ocean, sea, waters

hill

holmium (chemical element, Ho, atomic number 67)

hill

obsolete form of holme

Source: wiktionary.org