|1.||a person in charge of or employing others|
|2.||chiefly (US) a professional politician who controls a party machine or political organization, often using devious or illegal methods|
|—vb (usually foll by around |
|3.||to employ, supervise, or be in charge of|
|4.||to be domineering or overbearing towards (others)|
|5.||slang excellent; fine: a boss hand at carpentry; that's boss!|
|[C19: from Dutch baas master; probably related to Old High German basa aunt, Frisian baes master]|
|1.||a knob, stud, or other circular rounded protuberance, esp an ornamental one on a vault, a ceiling, or a shield|
|2.||biology any of various protuberances or swellings in plants and animals|
|3.||a. an area of increased thickness, usually cylindrical, that strengthens or provides room for a locating device on a shaft, hub of a wheel, etc|
|b. a similar projection around a hole in a casting or fabricated component|
|4.||an exposed rounded mass of igneous or metamorphic rock, esp the uppermost part of an underlying batholith|
|5.||to ornament with bosses; emboss|
|[C13: from Old French boce, from Vulgar Latin bottia (unattested); related to Italian bozza metal knob, swelling]|
A circumscribed rounded swelling; a protuberance.
The prominence of a kyphosis or humpback.