anal sphincter
— Noun
– English
~ the sphincter muscle of the anus
Austrotaxus spicata
— Noun
– English
~ large yew native to New Caledonia; cultivated in eastern Australia and New Zealand and Hawaii
Acer spicatum
— Noun
– English
~ small shrubby maple of eastern North America; scarlet in autumn
American spicebush
— Noun
– English
~ deciduous shrub of the eastern United States having highly aromatic leaves and bark and yellow flowers followed by scarlet or yellow berries
American spikenard
— Noun
– English
~ unarmed woody rhizomatous perennial plant distinguished from wild sarsaparilla by more aromatic roots and panicled umbels; southeastern North America to Mexico
Artemis spinescens
— Noun
– English
~ a perennial that is valuable as sheep forage in the United States
Aralia spinosa
— Noun
– English
~ small deciduous clump-forming tree or shrub of eastern United States
Amaranthus spinosus
— Noun
– English
~ erect annual of tropical central Asia and Africa having a pair of divergent spines at most leaf nodes
Atlantic spiny dogfish
— Noun
– English
~ destructive dogfish of the Atlantic coastal waters of America and Europe; widely used in anatomy classes
ardent spirits
— Noun
– English
~ strong distilled liquor or brandy
ankylosing spondylitis
— Noun
– English
~ a chronic form of spondylitis primarily in males and marked by impaired mobility of the spine; sometimes leads to ankylosis
Aix sponsa
— Noun
– English
~ showy North American duck that nests in hollow trees
air spring
— Noun
– English
~ a mechanical device using confined air to absorb the shock of motion
alfalfa sprout
— Noun
– English
~ sprouted alfalfa seeds
Allegheny spurge
— Noun
– English
~ low semi-evergreen perennial herb having small spikes of white or pinkish flowers; native to southern United States but grown elsewhere
Allegheny mountain spurge
— Noun
– English
~ low semi-evergreen perennial herb having small spikes of white or pinkish flowers; native to southern United States but grown elsewhere
Annona squamosa
— Noun
– English
~ tropical American tree bearing sweet pulpy fruit with thick scaly rind and shiny black seeds
acorn squash
— Noun
– English
~ small dark green or yellow ribbed squash with yellow to orange flesh
acorn squash
— Noun
– English
~ squash plant bearing small acorn-shaped fruits having yellow flesh and dark green or yellow rind with longitudinal ridges