n. [林]定株（在幼林中，按照合理的密度保留一定林木的抚育作业）

Single \Sin"gle\, v. t. [imp. & p. p. {Singled}; p. pr. & vb. n.
{Singling}.]
1. To select, as an individual person or thing, from among a
number; to choose out from others; to separate.

Dogs who hereby can single out their master in the
dark. --Bacon.

His blood! she faintly screamed her mind
Still singling one from all mankind. --More.

2. To sequester; to withdraw; to retire. [Obs.]

An agent singling itself from consorts. --Hooker.

3. To take alone, or one by one.

Men . . . commendable when they are singled.
--Hooker.