Bowtell is derived from the medieval term bottle; in architecture

Architecture

Architecture is both the process and product of planning, designing and construction. Architectural works, in the material form of buildings, are often perceived as cultural and political symbols and as works of art...

 it refers to a round or cornice

Cornice

Cornice molding is generally any horizontal decorative molding that crowns any building or furniture element: the cornice over a door or window, for instance, or the cornice around the edge of a pedestal. A simple cornice may be formed just with a crown molding.The function of the projecting...

d molding

Molding (decorative)

Molding or moulding is a strip of material with various profiles used to cover transitions between surfaces or for decoration. It is traditionally made from solid milled wood or plaster but may be made from plastic or reformed wood...

 below the abacus

Abacus (architecture)

In architecture, an abacus is a flat slab forming the uppermost member or division of the capital of a column, above the bell. Its chief function is to provide a large supporting surface to receive the weight of the arch or the architrave above...

 in a Tuscan

Tuscan order

Among canon of classical orders of classical architecture, the Tuscan order's place is due to the influence of the Italian Sebastiano Serlio, who meticulously described the five orders including a "Tuscan order", "the solidest and least ornate", in his fourth book of Regole generalii di...

 or Roman Doric capital

Capital (architecture)

In architecture the capital forms the topmost member of a column . It mediates between the column and the load thrusting down upon it, broadening the area of the column's supporting surface...

; the word is a variant of boltel, which is probably the diminutive of bolt, the shaft of an arrow

Arrow

An arrow is a shafted projectile that is shot with a bow. It predates recorded history and is common to most cultures.An arrow usually consists of a shaft with an arrowhead attached to the front end, with fletchings and a nock at the other.- History:...

 or javelin

Javelin throw

The javelin throw is a track and field athletics throwing event where the object to be thrown is the javelin, a spear approximately 2.5 metres in length. Javelin is an event of both the men's decathlon and the women's heptathlon...

. A roving bowtell is one which passes up the side of a bench end and round a finial

Finial

The finial is an architectural device, typically carved in stone and employed decoratively to emphasize the apex of a gable or any of various distinctive ornaments at the top, end, or corner of a building or structure. Smaller finials can be used as a decorative ornament on the ends of curtain rods...

, the term roving being applied to that which follows the line of a curve.