1. [n]  works for an expert to learn a trade
2. [v]  be or work as an apprentice; "She apprenticed with the great master"

APPRENTICE is a 10 letter word that starts with A.

1. \Ap*pren"tice\, n. [OE. apprentice, prentice, OF.
   aprentis, nom. of aprentif, fr. apprendare to learn, L.
   apprendere, equiv. to apprehendere, to take hold of (by the
   mind), to comprehend. See {Apprehend}, {Prentice}.]
   1. One who is bound by indentures or by legal agreement to
      serve a mechanic, or other person, for a certain time,
      with a view to learn the art, or trade, in which his
      master is bound to instruct him.
   2. One not well versed in a subject; a tyro.
   3. (Old law) A barrister, considered a learner of law till of
      sixteen years' standing, when he might be called to the
      rank of serjeant. [Obs.] --Blackstone.
   

2. \Ap*pren"tice\, v. t. [imp. & p. p. {Apprenticed}; p.
   pr. & vb. n. {Apprenticing}.]
   To bind to, or put under the care of, a master, for the
   purpose of instruction in a trade or business.