Adjective: spineless spIn-lus
- (zoology) lacking a backbone or spinal column
"worms are an example of spineless animals";
- invertebrate
- Lacking spiny processes
"spineless fins"
- Lacking courage or vitality
"a spineless craven fellow";
- gutless, namby-pamby [informal], wishy-washy [informal]
- Lacking thorns
"They developed a spineless variety of rose for easier handling";
- thornless
See also: unarmed
Antonym: spinous
Encyclopedia: Spineless