penna
pen.na \'pen-*\ \'pen-.e-, -.i-\ \pe-'na--sh*s\ n or pen.nae [L, feather, wing - more at PEN] pl : a contour feather esp. as distinguished from a down feather or plume - pen.na.ceous aj
Webster's English Dictionarypen.na \'pen-*\ \'pen-.e-, -.i-\ \pe-'na--sh*s\ n or pen.nae [L, feather, wing - more at PEN] pl : a contour feather esp. as distinguished from a down feather or plume - pen.na.ceous aj