Heres some examples, the source website is :
http://www.chebucto.ns.ca/~ag371/Gaelic/faclan.htm
Gaelic Words in English
From the Gaelic-L Archives - various contributers
English Irish Gaelic Scots Gaelic Meaning of Gaelic
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airt aird aird points of the compass
banshee bean sí bean-sìthe woman of the fairy mound
bard bard bàrd poet (of a certain rank)
bog bog bog soft
brogue bróg bròg shoe, boot
bun bun bun base, bottom
("She says he has cute buns.")
caber cabar cabar pole, rafter
(as in "tossing the caber")
cairn carn càrn heap, pile
carrageenan carraigín carraigean Irish moss seaweed
(food thickener & emulsifier - check your yogurt ingredients)
cateran ceathairne peasantry
clan clann clann children, lineage
claymore claíomh mór claidheamh mór great sword
crag creig creag rocky outcrop
Colleen cailín (caileag) girl
dig, twig tuig tuig understand
dulse duileasc duileasg edible seaweed
galore go leor gu leòr plenty, enough
gillie giolla gille lad, servant
glen gleann gleann valley
glom glám glam grab, clutch
(as in "glom onto it")
keen caoin caoin weep, lament
kibosh caidhp báis cap of death
("put the kibosh on that plan")
loch loch loch lake
pet peata peata tame animal
phony fáinne fàinne ring (from the gilt brass ring
used by swindlers)
pibroch piobaireachd piping
pillion pillín pillean small pad, cushion
plaid pluid plaide blanket
poteen poitín little pot, moonshine
shamrock seamróg seamrag shamrock
shanty seantigh seann taigh old house
shebeen síbín illicit whiskey; speakeasy
shillelagh sail éille cudgel on a thong
slew slua sluagh host, multitude (as in 'I have
a slew of things to do')
slob slaba mud, ooze; slovenly person
slogan sluagh ghairm call to the multitude
smashing 's math sin that is good
smithereens smidiríní (smid) little bits
sporran sparán sporan purse
Tory tóraí tòraiche pursuer; robber; bandit
trouser triús triubhas trews; pants
whiskey uisce (beatha) uisge (beatha) water (of life)
Gael Gaedheal Gàidheal a speaker of Gaelic