eolas, m. (gs. -ais).1. Knowledge. (a) Range of knowledge. Ár gcuid eolais (ar Dhia, ar an saol, orainn féin), what we know (of God, of life, of ourselves). An té is mó ~, the most knowledgeable person. Lucht (an) eolais, those who know; the learned, the expert. Díobháil eolais, lack of knowledge. Dul thar d’~, to go beyond the range of one’s knowledge. (b) Practical understanding. ~ a chur, a fháil, ar rud, to acquire a knowledge of sth. Tá ~ ar an obair aige, he knows the work. Den obair an t-~, skill is half the work. Tá ~ air, there is a knack in it. Tá an t-~ aige, he has the know-how. Tá sé ar ~ agam, I know, have learned, it. Tá mé ina ~, I am familiar with it. Is beag a ~ ar an Laidin, he has little knowledge of Latin. (c) Close acquaintance, familiarity. ~ a chur ar dhuine, to get to know, to know about, s.o. Duine breá é dá mbeadh ~ agat air, he is a fine person if you knew him well. Tá aithne agus ~ agam air, I know and understand him; I know all about him. Níl aon duine ar m’~ is fearr liom ná é, I know of nobody I like better than him. Tá mé in ~ duine a dhéanfadh é, I happen to know s.o. who would do it. Prov:Ní h~ go haontíos; ní thig ~ gan aontíos, if you want to know me come and live with me. (d) Information. ~ a iarraidh, a lorg, to seek information. Más ~ atá uait, if you want to know. Ní hé sin an t-~ a fuair mé, that is not the information I got. De réir m’eolais, according to my knowledge. Ar feadh m’eolais, as far as I know. Tá cuma an eolais air, he has a knowledgeable appearance. Oifig eolais, information office. (e) Knowledge of etiquette. Is é an t-~ é, it is the informed thing to do. Ní den ~ é, it is not polite. 2. Knowledge of ways; direction, guidance. Duine a chur ar an ~, to set s.o. on the right road; to direct s.o. An t-~ a dhéanamh do dhuine, to guide s.o. Teacht ar an ~, to find the way. ~ áite a chur, to ask for directions to a place. Tá ~ na háite aige, he knows his way to, about, the place. Duine a chur dá ~, to misdirect s.o. Chaill mé m’~, I lost my sense of direction, my way. Réalta eolais, guiding star. Méar eolais, finger-post. Cuaille, maide, eolais, signpost.