The foremost part of an advancing army or naval force
the position of greatest importance or advancement; the leading position in any movement or field; "the Cotswolds were once at the forefront of woollen manufacturing in England"; "the idea of motion was always to the forefront of his mind and central to his philosophy"
A position at the forefront of new developments or ideas
avant-garde: any creative group active in the innovation and application of new concepts and techniques in a given field (especially in the arts)
the leading units moving at the head of an army
A group of people leading the way in new developments or ideas
Used in reference to the cycle of a specified condition or set of events
A circular object that revolves on an axle and is fixed below a vehicle or other object to enable it to move easily over the ground
A circular object that revolves on an axle and forms part of a machine
(wheel) a simple machine consisting of a circular frame with spokes (or a solid disc) that can rotate on a shaft or axle (as in vehicles or other machines)
(wheel) change directions as if revolving on a pivot; "They wheeled their horses around and left"
steering wheel: a handwheel that is used for steering
Move on ice skates or roller skates in a gliding fashion
Perform (a specified figure) on skates
sports equipment that is worn on the feet to enable the wearer to glide along and to be propelled by the alternate actions of the legs
Ride on a skateboard
large edible rays having a long snout and thick tail with pectoral fins continuous with the head; swim by undulating the edges of the pectoral fins
move along on skates; "The Dutch often skate along the canals in winter"