bee·tle-browed 
(bētl-broud′)
(bētl-broud′)adj.
Having thick, prominent or projecting eyebrows.
[Middle English bitel-brouwed , having grim brows, sullen, perhaps from bitil, betil, bug, beetle (from the resemblance of a pair of thick eyebrows to the tufted antennae of a cockchafer); see BEETLE1, or from bitel, sharp (probably from Old English *bitol, biting, from Old English bite, bite); see BIT2 + brouwed (from brow, brow; see BROW).]
- triggerman
- trigly
- triglyceride
- triglyph
- triglyphic
- trigness
- trigon
- trigonal
- trigonometric
- trigonometrical
- trigonometrically
- trigonometric function
- trigonometry
- trigram
- trigrammatic
- trigrammatically
- trigraph
- trigraphic
- trigraphically
- trihalomethane
- trihedral
- trihedron
- trihybrid
- triiodothyronine
- trike