aculeus
/əˈkjuːlɪəs/noun
1 Botany. A sharply pointed projection on a plant, such as a thorn or a spine; especially one growing directly from the epidermis or forming an extension of it.
2 Zoology. The sting of an insect or other animal.
Origin
Early 17th century (in an earlier sense). From classical Latin acūleus sting, spine, thorn, barb, spike, prick, pang from acus needle + -leus, suffix forming diminutives.
- earth bath
- earth battery
- earth-bed
- earthboard
- earth-born
- earthbound
- quaterne
- quaternio
- quaternion
- quaternion group
- quaternionic
- quaternionist
- quaternise
- Quaternitarian
- quaternity
- quaternization
- quaternize
- quatorzain
- quatorze
- Quatorze Juillet
- quatrain
- quatreble
- quatre-couleur
- quatre-couleurs
- quatrefoil