1. Not defended or capable of being defended
   - assailable, undefended, open

See also: vulnerable

• American language
• American larch
• American laurel
• American Legion
• American leishmaniasis
• American licorice
• American lime
• American liquorice
• American lobster
• American lotus
• American magpie
• American maidenhair fern
• American marten
• American mastodon
• American mastodont
• American merganser
• American mink
• American mistletoe
• American mountain ash
• American oil palm
• American olive
• American organ
• American oriole
• American parasol
• American parsley fern