Bible scholars-I need help

[Arphaxad]

3144
μάρτυς (mártys)
+ Etymologyf uncertain affinity;
- Definition:
a witness (literally (judicially) or figuratively (genitive case)); by analogy, a "martyr"

Acts 1:8 Ye shall be witnesses unto me, both in Jerusalem.....

The word "witnesses" (martys) in this verse, does the context mean "martyrs" or "testifiers" or both?
In other words, can the verse mean "ye shall be martyrs unto me..."?

ARPH