Two words
May be 2 words combined (ser+aculum) If not obvious, probably incorrect
acul.um N 1 1 GEN P F uncommon
acula, aculae N (1st) F [XXXEO] uncommon
small amount of water; small stream; little needle (L+S);
acul.um N 2 6 ACC S F
acul.um N 2 6 GEN P F uncommon
aculos, aculi N F [XAXNO] Pliny
acorn/fruit of the ilex (holm oak or evergreen oak) (poss. holly);
ser N 9 8 X X M
Ser., abb. N M [XXXDX] lesser
Servius (Roman praenomen); (abb. Ser.);
ser N 3 1 NOM S C
ser N 3 1 VOC S C
Ser, Seris N (3rd) C [XXXDO] lesser
Chinese (people); inhabitants of region beyond Scythia and India;
*

Credits:
This, our local install of the popular standby Whitaker's Words, is possible thanks to the resurrection of the venerable project at William Whitaker's Words, where you will also find extensive documentation. The corresponding GitHub repository is where you can submit issues about missing forms and analyses.
This web interface by Walter M. Shandruk.