Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!

Qenya 

ruk-

verb. to pluck

A verb from the Quenya Verbal System (QVS) of 1948 based on the root ᴹ√RUK “pluck” (PE22/102).

Neo-Quenya: Elsewhere √RUK was the basis for demon words like S. Balrog, so for “pluck” I would use ᴱQ. lep- which is more obviously connected to fingers.