Answer: ogham

AnswerCrossword Clue
OGHAMAncient Irish alphabet
oghamthe alphabetic system of fifth and sixth century Irish in which an alphabet of 20 letters is represented by notches for vowels and lines for consonants and which is known principally from inscriptions cut on the edges of rough standing tombstones
oghaminscription employing this script
oghaman ancient alphabet, also OGAM
oghamany of the 20 characters of this script, each consisting of one or more strokes for consonants and of notches for vowels cut across or upon a central line on a stone or piece of wood
oghamalphabetical script used originally for inscriptions in an archaic form of Irish, from about the 5th to the 10th centuries
OGHAMOld alphabetic script
OGHAMOld Irish alphabet system
OGHAMOld Irish memorial inscription
OGHAMRunic alphabet
OGHAMOld alphabetical script
OGHAMOld Irish character
OGHAMArchaic Irish script
OGHAMRunic character
OGHAMOld Irish alphabetic system
OGHAMIrish alphabetic system
OGHAMOld Irish script
OGHAMOld Irish writing
OGHAMIrish writing of old.
OGHAMEarly Irish alphabet.
OGHAMEarly Irish alphabet
OGHAMAlphabetical script, old Irish
OGHAMEarly British Isles script
OGHAMOld Gaelic alphabet
OGHAMOld Irish alphabet