A spike, wedge, or peg that is driven into a rock or ice surface as a support (as for a mountain climber).
To put pitons into a rock/ice to facilitate climbing.
A spike or point on an implement or tool, especially a prong of a fork or a tooth of a comb.
A wild vetch or tare.
A small branch, especially on an antler or horn.
To kindle; to set on fire.
To shut in, or enclose.
small, diminutive