Lingula \Lin"gu*la\ (l[i^][ng]"g[-u]*l[.a]), n.; pl. -l[ae] (-l[=e]). [L., a little tongue.]

1. (Anat.) A tonguelike process or part.

2. (Zo["o]l.) Any one of numerous species of brachiopod shells belonging to the genus Lingula, and related genera. See Brachiopoda, and Illustration in Appendix.

Lingula flags (Geol.), a group of strata in the lower Silurian or Cambrian system of Wales, in which some of the layers contain vast numbers of a species of Lingula.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Amygdala \A*myg"da*la\ ([.a]*m[i^]g"d[.a]*l[.a]), n.; pl. -l[ae] (-l[=e]). [L., an almond, fr. Gr. 'amygda`lh. See Almond.]

1. An almond.

2. (Anat.)
   (a) One of the tonsils of the pharynx.
   (b) One of the rounded prominences of the lower surface of the lateral hemispheres of the cerebellum, each side of the vallecula.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Pseudostella \Pseu`do*stel"la\, n.; pl. -l[ae]. [NL., fr. Gr. pseydh`s false + L. stella star.]

(Astron.) Any starlike meteor or phenomenon. [R.]

Source: Webster's Revised Unabridged Dictionary (1913)