Webster's Revised Unabridged Dictionary · 1913

Endless

Endless , adjective

[Anglo-Saxon endeleás. See End.]

1.
Without end; having no end or conclusion; perpetual; interminable; -- applied to length, and to duration; as, an endless line; endless time; endless bliss; endless praise; endless clamor.
2.
Infinite; excessive; unlimited. — Shakespeare
3.
Without profitable end; fruitless; unsatisfying. [Rare]
All loves are endless. — Beau. & Fl
4.
Void of design; objectless; as, an endless pursuit.
5.
having a linear or ribbonlike form with the two ends connected together, such as in a circle, ellipse, torus, or any other closed loop. Belts or chains used in drive mechanisms are considered endless in this sense. See endless chain.
Collocations (2)
Endless chain , a chain which is made continuous by uniting its two ends.
Endless screw (Mechanics) , See under Screw.