I. ˈkan-tə-ˌlē-vər, -ˌle- noun
Etymology: perhaps from cant (III) + -i- + lever
Date: 1667
: a projecting beam or member supported at only one end: as
a. : a bracket-shaped member supporting a balcony or a cornice
b. : either of the two beams or trusses that project from piers toward each other and that when joined directly or by a suspended connecting member form a span of a cantilever bridge
II. verb
Date: 1902
transitive verb
1. : to support by a cantilever
a cantilever ed shelf
2. : to build as a cantilever
intransitive verb
: to project as a cantilever