try·sail 
(trīsəl, -sāl′)
(trīsəl, -sāl′)n.
A small fore-and-aft sail hoisted abaft a mast in a storm to keep a vessel's bow to the wind.
[From obsolete try, a lying to, heaving to.]
- radiative zone
- radiator
- radical
- radical expression
- radicalism
- radicalization
- radicalize
- radically
- radical mastectomy
- radicalness
- radical sign
- radicand
- radicchio
- radices
- radicle
- radii
- radio
- radio-
- radioactive
- radioactive decay
- radioactively
- radioactive series
- radioactivity
- radio astronomy
- radio beacon